Лабораторные работы по ПО/Настройка почтового сервера Postfix

Материал из wiki.nntc.nnov.ru
Перейти к навигации Перейти к поиску

Виртуальные пользователи и домены, почтовый сервер на основе Postfix, Courier, MySQL и SquirrelMail (Ubuntu 8,04 LTS).

Версия 1.0 Автор: Falko Timme <ft [at] falkotimme [dot] com> Последнее редактирование 05/15/2008 Перевод: Глушков Вадим <plusv [at] yandex [dot] ru> Оригинальный текст руководства можно найти по следующему адресу [1]

Права на данное руководство принадлежат Falko Timme (Copyright (c) 2008 by Falko Timme). Оно взято из учебника Christoph Haas, которое вы можете найти по адресу http://workaround.org. Вы можете свободно использовать данное руководство, оно распространяется по лицензии Creative Commons версии 2.5 и других более поздних версий.

В данном руководстве описана установка почтового сервера Postfix, в который использует виртуальных пользователей и виртуальные домены (т.е. все учетные записи и наименование доменов сохраняются в базе данных MySQL). Также показана установка и настройка Courier (Courier-POP3, Courier-IMAP), с возможностью аутентификации Postfix с использованием базы данных MySQL.

В результате Postfix будет поддерживать SMTP-AUTH, TLS и quota (по умолчанию поддержка квот не встроена в Postfix и я покажу как необходимо применить patch к Postfix). Пароли будут хранится в базе данных в зашифрованном виде (в большинстве руководств я обнаружил, что пароли хранятся в не зашифрованном виде в текстовых файлах, которые создают угрозу безопасности). Кроме этого в данном руководстве рассмотрена установка и настройка Amavisd, SpamAssassin и ClamAV это дает возможность сканировать сообщения на наличие вирусов и спама. Я также покажу как установить веб интерфейс к почте SquirrelMail для того чтобы пользователи могли получать, отправлять почту изменять свои пароли.

Преимущество такой «виртуальной» установки (виртуальные пользователи и домены хранятся в базе данных MySQL) состоит в том, что такая установка обладает большей гибкостью и мощностью, чем установка с «реальными» пользователями. С таким «виртуальным» почтовым сервером можно легко обрабатывать тысячи пользователей и доменов. Кроме этого ими легче управлять, так управление осуществляется через базу данных MySQL, вы с легкостью можете добавлять новые или изменять существующие. Отпадает необходимость использование команды postmap для создания bd файлов, нет необходимости перезагрузки Postfix и т.п. Для управления базой данных вы можете использовать веб инструменты, такие как phpmyadmin, установка которого также описана в данном руководстве. Третье преимущество заключается в том, что пользователи будут иметь адрес электронной почты в качестве имени пользователя электронной почты (вместо имени пользователя + адрес электронной почты), которые легче понять и запомнить.

Этот документ предназначен для использования в качестве практического руководства в нем не раскрыты теоретические основы. Они представлены во множестве других документах в Интернет.

Этот документ поставляется без гарантий любого рода! Я хочу сказать, что это не единственный способ создания такой системы. Есть много способов достижения этой цели, но это такой, который я принял. Я не выдают никаких гарантий, что это будет работать у Вас!

1. Предварительные замечания

Это руководство для Ubuntu 8.04 Server (Hardy Heron), вам необходимо произвести базовую установку Ubuntu 8.04 server перед началом. Система должна иметь статический IP адрес. На ней должен корректно быть настроен BIND (с зоной srvX.lab6.nntc, где X - номер виртуальной машины), в качестве hostname должен быть выставлен имя домена.

Это можно сделать с помощью команд: 

echo "srvX.lab6.nntc" > /etc/hostname
hostname -F /etc/hostname

А затем проверим работоспособоность нового имя командой: 

hostname

Если в ответ мы видим: 

srvX.lab6.nntc

то мы все сделали правильно.

Я использую 192.168.6.1 как мой IP адрес в данном руководстве и srv1.lab6.nntc как имя хоста.

Убедитесь, что вы зашли как суперпользователь, 

sudo su

потому что в данном руководстве необходимо выполнять все шаги от его имени.

Очень важным является, чтобы вы сделали символическую ссылку /bin/sh на /bin/bash... 

ln -sf /bin/bash /bin/sh

... и еще отключите AppArmor: 

/etc/init.d/apparmor stop
update-rc.d -f apparmor remove

2. Установка Postfix, Courier, Saslauthd, MySQL, phpMyAdmin

Для установки Postfix, Courier, Saslauthd, MySQL и phpMyAdmin, нам просто необходимо выполнить:

aptitude install postfix postfix-mysql postfix-doc mysql-client mysql-server courier-authdaemon courier-authlib-mysql courier-pop courier-pop-ssl courier-imap courier-imap-ssl postfix-tls libsasl2-2 libsasl2-modules libsasl2-modules-sql sasl2-bin libpam-mysql openssl phpmyadmin apache2 libapache2-mod-php5 php5 php5-mysql libpam-smbpass telnet


Вам будет задано несколько вопросов на которые необходимо ответить:

New password for the MySQL "root" user: <-- Ваш_пароль_на_суперпользователя_MySQL Repeat password for the MySQL "root" user: <-- Повторите_Ваш_пароль_на_суперпользователя_MySQL Create directories for web-based administration? <-- No General type of mail configuration: <-- Internet Site System mail name: <-- srvX.lab6.nntc SSL certificate required <-- Ok Web server to reconfigure automatically: <-- apache2

3 Создание базы данных MySQL для Postfix/Courier.

Сначала создадим базу данных с названием mail: 

mysqladmin -u root -p create mail

Затем мы перейдем в оболочку MySQL: 

mysql -u root -p

В оболочке MySQL скорлупы, мы создадим пользователя mail_admin с паролем mail_admin_password (замените на свои) которые будет иметь следующие привилегии SELECT, INSERT, UPDATE, DELETE на базу данных mail. Этот пользователь будет использоваться Postfix и Courier для подключения к почтовой базе: 

GRANT SELECT, INSERT, UPDATE, DELETE ON mail.* TO 'mail_admin'@'localhost' IDENTIFIED BY 'mail_admin_password';
GRANT SELECT, INSERT, UPDATE, DELETE ON mail.* TO 'mail_admin'@'localhost.localdomain' IDENTIFIED BY 'mail_admin_password';
FLUSH PRIVILEGES;

Сейчас используя оболочку MySQL, мы создадим таблицы необходимые Postfix и Courier: 

USE mail;

CREATE TABLE domains (
domain varchar(50) NOT NULL,
PRIMARY KEY (domain) )
TYPE=MyISAM;

CREATE TABLE forwardings (
source varchar(80) NOT NULL,
destination TEXT NOT NULL,
PRIMARY KEY (source) )
TYPE=MyISAM;

CREATE TABLE users (
email varchar(80) NOT NULL,
password varchar(20) NOT NULL,
quota INT(10) DEFAULT '10485760',
PRIMARY KEY (email)
) TYPE=MyISAM;

CREATE TABLE transport (
domain varchar(128) NOT NULL default ,
transport varchar(128) NOT NULL default ,
UNIQUE KEY domain (domain)
) TYPE=MyISAM;

quit;

Как вы уже наверное заметили мы покинули оболочку MySQL и ввернулись командную оболочку Linux.

Таблица domains будет хранить наименования виртуальных доменов для которых Postfix будет получать письма.


Таблица forwardings будет содержать псевдонимы почтовых ящиков, например почтовые сообщения направленные на info@example.com будт перенаправлены на sales@example.com.

Таблица users будет содержать всю информацию о виртуальных пользователях (например, адреса электронной почты, потому что адрес электронной почты и имя пользователя одно и тоже) и паролей (в зашифрованном виде!), а также размер квоты для каждого почтового ящика (в данном примере значение по умолчанию равно 10485760 байт, что означает 10 Мб)

Таблица transport необязательного характера, она для продвинутых пользователей. Позволяет перенаправлять почту отдельных пользователей, доменов либо всю почту на другой почтовый сервер.

Между прочим (предполагая, что адрес вашего почтового сервера 192.168.6.1), для доступа к почтовой базе данных через phpMyAdmin вы можете набрать в вашем браузере http://192.168.6.1/phpmyadmin/ и войти как mail_admin. После этого вы можете посмотреть базу данных. В дальнейшем вы можете использовать phpMyAdmin для администрирования почтового сервера.

4 Configure Postfix

Сейчас нам необходимо указать Postfix, где ему искать информацию в базе данных. Для этого создадим шесть текстовых файлов. Как вы можете заметить, я указываю Postfix соединяться с MySQL через IP адрес 127.0.0.1 вместо localhost. Это связанно с тем, что Postfix запущенный в chroot окружении не сможет иметь доступа к MySQL сокету, если будет пытаться использовать localhost для подключения. Если же я буду использовать 127.0.0.1 будет использовать TCP сеть для подключения к MySQL, и это снимет проблему соединения из chroot окружения (в качестве альтернативы можно поместить соект MySQL в chroot окружение, но это вызовет дополнительные проблемы).


Убедитесь что /etc/mysql/my.cnf содержит следующие строки: 

nano /etc/mysql/my.cnf

[...]
bind-address            = 127.0.0.1
[...]

Если вы изменили /etc/mysql/my.cnf, пожалуйста перезапустите MySQL: 

/etc/init.d/mysql restart

Запустите 

netstat -tap | grep mysql

чтобы убедится, что MySQL прослушивает 127.0.0.1 (srvX.lab6.nntc): 

netstat -tap | grep mysql
tcp        0      0 srvX.lab6.nntc:mysql *:*                     LISTEN      7136/mysqld

Сейчас давайте создадим шесть необходимых нам файлов: 

nano /etc/postfix/mysql-virtual_domains.cf

user = mail_admin
password = mail_admin_password
dbname = mail
query = SELECT domain AS virtual FROM domains WHERE domain='%s'
hosts = 127.0.0.1

nano /etc/postfix/mysql-virtual_forwardings.cf

user = mail_admin
password = mail_admin_password
dbname = mail
query = SELECT destination FROM forwardings WHERE source='%s'
hosts = 127.0.0.1

nano /etc/postfix/mysql-virtual_mailboxes.cf

user = mail_admin
password = mail_admin_password
dbname = mail
query = SELECT CONCAT(SUBSTRING_INDEX(email,'@',-1),'/',SUBSTRING_INDEX(email,'@',1),'/') FROM users WHERE email='%s'
hosts = 127.0.0.1

nano /etc/postfix/mysql-virtual_email2email.cf

user = mail_admin
password = mail_admin_password
dbname = mail
query = SELECT email FROM users WHERE email='%s'
hosts = 127.0.0.1

nano /etc/postfix/mysql-virtual_transports.cf

user = mail_admin
password = mail_admin_password
dbname = mail
query = SELECT transport FROM transport WHERE domain='%s'
hosts = 127.0.0.1

nano /etc/postfix/mysql-virtual_mailbox_limit_maps.cf

user = mail_admin
password = mail_admin_password
dbname = mail
query = SELECT quota FROM users WHERE email='%s'
hosts = 127.0.0.1

Затем изменим права доступа и группа для этих файлов: 

chmod o= /etc/postfix/mysql-virtual_*.cf
chgrp postfix /etc/postfix/mysql-virtual_*.cf

Создаем нового пользователя и группу с названием vmail с домашней директорией /home/vmail , где будут находится почтовые ящики: 

groupadd -g 5000 vmail
useradd -g vmail -u 5000 vmail -d /home/vmail -m

Сейчас мы настроим Postfix. Обязательно замените srvX.lab6.nntc на свое имя хоста (например srv1.lab6.nntc), иначе ваш почтовый сервер Postfix не сможет корректно работать! 

postconf -e 'myhostname = srvX.lab6.nntc'
postconf -e 'mydestination = srvX.lab6.nntc, localhost, localhost.localdomain'
postconf -e 'mynetworks = 127.0.0.0/8'
postconf -e 'virtual_alias_domains ='
postconf -e 'virtual_alias_maps = proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, mysql:/etc/postfix/mysql-virtual_email2email.cf'
postconf -e 'virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf'
postconf -e 'virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf'
postconf -e 'virtual_mailbox_base = /home/vmail'
postconf -e 'virtual_uid_maps = static:5000'
postconf -e 'virtual_gid_maps = static:5000'
postconf -e 'smtpd_sasl_auth_enable = yes'
postconf -e 'broken_sasl_auth_clients = yes'
postconf -e 'smtpd_sasl_authenticated_header = yes'
postconf -e 'smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination'
postconf -e 'smtpd_use_tls = yes'
postconf -e 'smtpd_tls_cert_file = /etc/postfix/smtpd.cert'
postconf -e 'smtpd_tls_key_file = /etc/postfix/smtpd.key'
postconf -e 'transport_maps = proxy:mysql:/etc/postfix/mysql-virtual_transports.cf'
postconf -e 'virtual_create_maildirsize = yes'
postconf -e 'virtual_maildir_extended = yes'
postconf -e 'virtual_mailbox_limit_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailbox_limit_maps.cf'
postconf -e 'virtual_mailbox_limit_override = yes'
postconf -e 'virtual_maildir_limit_message = "The user you are trying to reach is over quota."'
postconf -e 'virtual_overquota_bounce = yes'
postconf -e 'proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps'

Создадим сертификат SSL необходимый для TLS: 

cd /etc/postfix
openssl req -new -outform PEM -out smtpd.cert -newkey rsa:2048 -nodes -keyout smtpd.key -keyform PEM -days 365 -x509

Country Name (2 letter code) [AU]: <-- Введите страну (например, "RU").
State or Province Name (full name) [Some-State]: <-- Введите название области (например,"Nizhegorodsky") .
Locality Name (eg, city) []: <-- Введите населенный пункт (например, "Nizhny Novgorod").
Organization Name (eg, company) [Internet Widgits Pty Ltd]: <-- Введите наименование вашей организации (например, "NRTC").
Organizational Unit Name (eg, section) []: <--  Введите наименование вашего подразделения (например. "IT").
Common Name (eg, YOUR name) []: <-- Введите Fully Qualified Domain Name (например. "srvX.lab6.nntc").
Email Address []: <-- Введите ваш email.

Изменяем права доступа на smtpd.key: 

chmod o= /etc/postfix/smtpd.key


5 Configure Saslauthd

Сначала выполним следующую команду: 

mkdir -p /var/spool/postfix/var/run/saslauthd

Затем изменим /etc/default/saslauthd. Установив параметр START в yes и заменим строку OPTIONS="-c -m /var/run/saslauthd" на OPTIONS="-c -m /var/spool/postfix/var/run/saslauthd -r": 

nano /etc/default/saslauthd

#
# Settings for saslauthd daemon
# Please read /usr/share/doc/sasl2-bin/README.Debian for details.
#

# Should saslauthd run automatically on startup? (default: no)
START=yes

# Description of this saslauthd instance. Recommended.
# (suggestion: SASL Authentication Daemon)
DESC="SASL Authentication Daemon" 

# Short name of this saslauthd instance. Strongly recommended.
# (suggestion: saslauthd)
NAME="saslauthd" 

# Which authentication mechanisms should saslauthd use? (default: pam)
#
# Available options in this Debian package:
# getpwent  -- use the getpwent() library function
# kerberos5 -- use Kerberos 5
# pam       -- use PAM
# rimap     -- use a remote IMAP server
# shadow    -- use the local shadow password file
# sasldb    -- use the local sasldb database file
# ldap      -- use LDAP (configuration is in /etc/saslauthd.conf)
#
# Only one option may be used at a time. See the saslauthd man page
# for more information.
#
# Example: MECHANISMS="pam"
MECHANISMS="pam" 

# Additional options for this mechanism. (default: none)
# See the saslauthd man page for information about mech-specific options.
MECH_OPTIONS=""
 
# How many saslauthd processes should we run? (default: 5)
# A value of 0 will fork a new process for each connection.
THREADS=5 

# Other options (default: -c -m /var/run/saslauthd)
# Note: You MUST specify the -m option or saslauthd won't run!
#
# See /usr/share/doc/sasl2-bin/README.Debian for Debian-specific information.
# See the saslauthd man page for general information about these options.
#
# Example for postfix users: "-c -m /var/spool/postfix/var/run/saslauthd"
#OPTIONS="-c -m /var/run/saslauthd"
OPTIONS="-c -m /var/spool/postfix/var/run/saslauthd -r"

Создаем файл /etc/pam.d/smtp. И добавляем в него две строчки (обязательно используйте корректные значения относящиеся к вашей базе данных): 

nano /etc/pam.d/smtp

auth    required   pam_mysql.so user=mail_admin passwd=mail_admin_password host=127.0.0.1 db=mail table=users usercolumn=email passwdcolumn=password crypt=1
account sufficient pam_mysql.so user=mail_admin passwd=mail_admin_password host=127.0.0.1 db=mail table=users usercolumn=email passwdcolumn=password crypt=1

Создаем файл /etc/postfix/sasl/smtpd.conf. Он должен быть подобного вида: 

nano /etc/postfix/sasl/smtpd.conf

pwcheck_method: saslauthd
mech_list: plain login
allow_plaintext: true
auxprop_plugin: mysql
sql_hostnames: 127.0.0.1
sql_user: mail_admin
sql_passwd: mail_admin_password
sql_database: mail
sql_select: select password from users where email = '%u'

Добавляем пользователя postfix в группу sasl (это даст Postfix права доступа к saslauthd): 

adduser postfix sasl

Перезапускаем Postfix и Saslauthd: 

/etc/init.d/postfix restart
/etc/init.d/saslauthd restart


6 Настройка Courier

Укажем Courier, чтобы он проводил аутентификацию используя нашу базу данных MySQL. Редактируем /etc/courier/authdaemonrc и изменяем значение authmodulelist: 

nano /etc/courier/authdaemonrc

[...]
authmodulelist="authmysql"
[...]

Сделаем резервную копию файла /etc/courier/authmysqlrc и очистим его содержимое: 

cp /etc/courier/authmysqlrc /etc/courier/authmysqlrc_orig
cat /dev/null > /etc/courier/authmysqlrc

Откроем /etc/courier/authmysqlrc и вставим в него следующие строки: 

nano /etc/courier/authmysqlrc

MYSQL_SERVER localhost
MYSQL_USERNAME mail_admin
MYSQL_PASSWORD mail_admin_password
MYSQL_PORT 0
MYSQL_DATABASE mail
MYSQL_USER_TABLE users
MYSQL_CRYPT_PWFIELD password
#MYSQL_CLEAR_PWFIELD password
MYSQL_UID_FIELD 5000
MYSQL_GID_FIELD 5000
MYSQL_LOGIN_FIELD email
MYSQL_HOME_FIELD "/home/vmail"
MYSQL_MAILDIR_FIELD CONCAT(SUBSTRING_INDEX(email,'@',-1),'/',SUBSTRING_INDEX(email,'@',1),'/')
#MYSQL_NAME_FIELD
MYSQL_QUOTA_FIELD quota

Перезапустим Courier: 

/etc/init.d/courier-authdaemon restart
/etc/init.d/courier-imap restart
/etc/init.d/courier-imap-ssl restart
/etc/init.d/courier-pop restart
/etc/init.d/courier-pop-ssl restart

Запустим 

telnet localhost pop3

чтобы убедится, что наш сервер POP3 корректно работает. Мы должны увидеть +OK Hello. (введите quit для возврата в оболочку Linux). 

telnet localhost pop3

Trying 127.0.0.1...
Connected to localhost.localdomain.
Escape character is '^]'.
+OK Hello there.
quit
+OK Better luck next time.
Connection closed by foreign host.

7 Изменяем /etc/aliases

Откроем и изменим /etc/aliases. Сделаете так, что postmaster указывать на root, а root указывает на ваше имя пользователя или ваш почтовый адрес, у вас должно получится примерно так: 

nano /etc/aliases

[...]
postmaster: root
root:   administrator
[...]

После изменения /etc/aliases, вы должны запустить команду 

newaliases

и перезапустить Postfix: 

/etc/init.d/postfix restart

8 Установка amavisd-new, SpamAssassin и ClamAV

Для установки amavisd-new, spamassassin и clamav, выполним следующую команду: 

aptitude install amavisd-new spamassassin clamav clamav-daemon zoo unzip bzip2 unzoo libnet-ph-perl libnet-snpp-perl libnet-telnet-perl nomarch lzop pax

Настроим amavisd-new. Конфигурационные файлы находятся в директории /etc/amavis/conf.d . Ознакомитесь с ними. Большинство из настроек в этих файлах отлично выставлены, но все же мы изменим три файла:

Во первых включим ClamAV и SpamAssassin in /etc/amavis/conf.d/15-content_filter_mode раскомментировав @bypass_virus_checks_maps и @bypass_spam_checks_maps строки: 

nano /etc/amavis/conf.d/15-content_filter_mode

Файл должен быть похож на этот: 

use strict;

# You can modify this file to re-enable SPAM checking through spamassassin
# and to re-enable antivirus checking. 

#
# Default antivirus checking mode
# Uncomment the two lines below to enable it back
# 

@bypass_virus_checks_maps = (
  \%bypass_virus_checks, \@bypass_virus_checks_acl, \$bypass_virus_checks_re);


#
# Default SPAM checking mode
# Uncomment the two lines below to enable it back
#

@bypass_spam_checks_maps = (
  \%bypass_spam_checks, \@bypass_spam_checks_acl, \$bypass_spam_checks_re);

1;  # ensure a defined return

Вам следует посмотреть настройки спама и действия со спамом в /etc/amavis/conf.d/20-debian_defaults. Вам нет необходимости менять настройки по умолчанию. Этот файл содержит хорошие комментарии и поэтому нет необходимости дополнительно их разъяснять здесь. 

nano /etc/amavis/conf.d/20-debian_defaults

[...] $QUARANTINEDIR = "$MYHOME/virusmails"; $quarantine_subdir_levels = 1; # enable quarantine dir hashing

$log_recip_templ = undef; # disable by-recipient level-0 log entries $DO_SYSLOG = 1; # log via syslogd (preferred) $syslog_ident = 'amavis'; # syslog ident tag, prepended to all messages $syslog_facility = 'mail'; $syslog_priority = 'debug'; # switch to info to drop debug output, etc

$enable_db = 1; # enable use of BerkeleyDB/libdb (SNMP and nanny) $enable_global_cache = 1; # enable use of libdb-based cache if $enable_db=1

$inet_socket_port = 10024; # default listening socket

$sa_spam_subject_tag = '***SPAM*** '; $sa_tag_level_deflt = 2.0; # add spam info headers if at, or above that level $sa_tag2_level_deflt = 6.31; # add 'spam detected' headers at that level $sa_kill_level_deflt = 6.31; # triggers spam evasive actions $sa_dsn_cutoff_level = 10; # spam level beyond which a DSN is not sent

$sa_mail_body_size_limit = 200*1024; # don't waste time on SA if mail is larger $sa_local_tests_only = 0; # only tests which do not require internet access?

[...] $final_virus_destiny = D_DISCARD; # (data not lost, see virus quarantine) $final_banned_destiny = D_BOUNCE; # D_REJECT when front-end MTA $final_spam_destiny = D_BOUNCE; $final_bad_header_destiny = D_PASS; # False-positive prone (for spam) [...]

Finally, edit /etc/amavis/conf.d/50-user and add the line $pax='pax'; in the middle:

vi /etc/amavis/conf.d/50-user

use strict;

  2. Place your configuration directives here. They will override those in
  3. earlier files.
  5. See /usr/share/doc/amavisd-new/ for documentation and examples of
  6. the directives you can use in this file

$pax='pax';

  1. ------------ Do not modify anything below this line -------------

1; # ensure a defined return

Afterwards, run these commands to add the clamav user to the amavis group and to restart amavisd-new and ClamAV:

adduser clamav amavis /etc/init.d/amavis restart /etc/init.d/clamav-daemon restart /etc/init.d/clamav-freshclam restart

Now we have to configure Postfix to pipe incoming email through amavisd-new:

postconf -e 'content_filter = amavis:[127.0.0.1]:10024' postconf -e 'receive_override_options = no_address_mappings'

Afterwards append the following lines to /etc/postfix/master.cf:

vi /etc/postfix/master.cf

[...] amavis unix - - - - 2 smtp 

       -o smtp_data_done_timeout=1200
       -o smtp_send_xforward_command=yes

127.0.0.1:10025 inet n - - - - smtpd 

       -o content_filter=
       -o local_recipient_maps=
       -o relay_recipient_maps=
       -o smtpd_restriction_classes=
       -o smtpd_client_restrictions=
       -o smtpd_helo_restrictions=
       -o smtpd_sender_restrictions=
       -o smtpd_recipient_restrictions=permit_mynetworks,reject
       -o mynetworks=127.0.0.0/8
       -o strict_rfc821_envelopes=yes
       -o receive_override_options=no_unknown_recipient_checks,no_header_body_checks
       -o smtpd_bind_address=127.0.0.1

Then restart Postfix:

/etc/init.d/postfix restart

Now run

netstat -tap

and you should see Postfix (master) listening on port 25 (smtp) and 10025, and amavisd-new on port 10024:

root@server1:/etc/postfix# netstat -tap Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 localhost.localdo:10024 *:* LISTEN 15645/amavisd (mast tcp 0 0 localhost.localdo:10025 *:* LISTEN 16677/master tcp 0 0 localhost.localdo:mysql *:* LISTEN 6177/mysqld tcp 0 0 *:www *:* LISTEN 5367/apache2 tcp 0 0 *:smtp *:* LISTEN 16677/master tcp6 0 0 [::]:imaps [::]:* LISTEN 14020/couriertcpd tcp6 0 0 [::]:pop3s [::]:* LISTEN 14088/couriertcpd tcp6 0 0 [::]:pop3 [::]:* LISTEN 14051/couriertcpd tcp6 0 0 [::]:imap2 [::]:* LISTEN 13983/couriertcpd tcp6 0 0 [::]:ssh [::]:* LISTEN 4006/sshd tcp6 0 52 server1.example.com:ssh 192.168.0.210%8191:3340 ESTABLISHED 4059/0 root@server1:/etc/postfix#


10 Install Razor, Pyzor And DCC And Configure SpamAssassin

Razor, Pyzor and DCC are spamfilters that use a collaborative filtering network. To install Razor and Pyzor, run

apt-get install razor pyzor

DCC isn't available in the Ubuntu 8.04 repositories, so we install it as follows:

cd /tmp wget http://launchpadlibrarian.net/11564361/dcc-server_1.3.42-5_i386.deb wget http://launchpadlibrarian.net/11564359/dcc-common_1.3.42-5_i386.deb dpkg -i dcc-common_1.3.42-5_i386.deb dpkg -i dcc-server_1.3.42-5_i386.deb

Now we have to tell SpamAssassin to use these three programs. Edit /etc/spamassassin/local.cf and add the following lines to it:

vi /etc/spamassassin/local.cf

[...]

  1. dcc

use_dcc 1 dcc_path /usr/bin/dccproc

  1. pyzor

use_pyzor 1 pyzor_path /usr/bin/pyzor

  1. razor

use_razor2 1 razor_config /etc/razor/razor-agent.conf

  1. bayes

use_bayes 1 use_bayes_rules 1 bayes_auto_learn 1

Then we must enable the DCC plugin in SpamAssassin. Open /etc/spamassassin/v310.pre and uncomment the loadplugin Mail::SpamAssassin::Plugin::DCC line:

vi /etc/spamassassin/v310.pre

[...]

  1. DCC - perform DCC message checks.
  3. DCC is disabled here because it is not open source. See the DCC
  4. license for more details.

loadplugin Mail::SpamAssassin::Plugin::DCC [...]

You can check your SpamAssassin configuration by executing:

spamassassin --lint

It shouldn't show any errors.

Restart amavisd-new afterwards:

/etc/init.d/amavis restart

Now we update our SpamAssassin rulesets as follows:

sa-update --no-gpg

We create a cron job so that the rulesets will be updated regularly. Run

crontab -e

to open the cron job editor. Create the following cron job:

23 4 */2 * * /usr/bin/sa-update --no-gpg &> /dev/null

This will update the rulesets every second day at 4.23h.


11 Quota Exceedance Notifications

If you want to get notifications about all the email accounts that are over quota, then do this:

cd /usr/local/sbin/ wget http://puuhis.net/vhcs/quota.txt mv quota.txt quota_notify chmod 755 quota_notify

Open /usr/local/sbin/quota_notify and edit the variables at the top. Further down in the file (towards the end) there are two lines where you should add a % sign:

vi /usr/local/sbin/quota_notify

[...] my $POSTFIX_CF = "/etc/postfix/main.cf"; my $MAILPROG = "/usr/sbin/sendmail -t"; my $WARNPERCENT = 80; my @POSTMASTERS = ('postmaster@yourdomain.tld'); my $CONAME = 'My Company'; my $COADDR = 'postmaster@yourdomain.tld'; my $SUADDR = 'postmaster@yourdomain.tld'; my $MAIL_REPORT = 1; my $MAIL_WARNING = 1; [...] 

          print "Subject: WARNING: Your mailbox is $lusers{$luser}% full.\n";

[...] 

          print "Your mailbox: $luser is $lusers{$luser}% full.\n\n";

[...]

Run

crontab -e

to create a cron job for that script:

0 0 * * * /usr/local/sbin/quota_notify &> /dev/null

12 Test Postfix

To see if Postfix is ready for SMTP-AUTH and TLS, run

telnet localhost 25

After you have established the connection to your Postfix mail server type

ehlo localhost

If you see the lines

250-STARTTLS

and

250-AUTH LOGIN PLAIN

everything is fine:

root@server1:/usr/local/sbin# telnet localhost 25 Trying 127.0.0.1... Connected to localhost.localdomain. Escape character is '^]'. 220 server1.example.com ESMTP Postfix (Ubuntu) ehlo localhost 250-server1.example.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH LOGIN PLAIN 250-AUTH=LOGIN PLAIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN quit 221 2.0.0 Bye Connection closed by foreign host. root@server1:/usr/local/sbin#

Type

quit

to return to the system shell.


13 Populate The Database And Test

To populate the database you can use the MySQL shell:

mysql -u root -p USE mail;

At least you have to create entries in the tables domains and users:

INSERT INTO `domains` (`domain`) VALUES ('example.com'); INSERT INTO `users` (`email`, `password`, `quota`) VALUES ('sales@example.com', ENCRYPT('secret'), 10485760);

(Please take care that you use the ENCRYPT syntax in the second INSERT statement in order to encrypt the password!)

If you want to make entries in the other two tables, that would look like this:

INSERT INTO `forwardings` (`source`, `destination`) VALUES ('info@example.com', 'sales@example.com'); INSERT INTO `transport` (`domain`, `transport`) VALUES ('example.com', 'smtp:mail.example.com');

To leave the MySQL shell, type

quit;

For most people it is easier if they have a graphical front-end to MySQL; therefore you can also use phpMyAdmin (in this example under http://192.168.0.100/phpmyadmin/ or http://server1.example.com/phpmyadmin/) to administrate the mail database. Again, when you create a user, go sure that you use the ENCRYPT function to encrypt the password:

I do not think I have to explain the domains and users table further.

The forwardings table can have entries like the following: source destination info@example.com sales@example.com Redirects emails for info@example.com to sales@example.com @example.com thomas@example.com Creates a Catch-All account for thomas@example.com. All emails to example.com will arrive at thomas@example.com, except those that exist in the users table (i.e., if sales@example.com exists in the users table, mails to sales@example.com will still arrive at sales@example.com). @example.com @anotherdomain.tld This redirects all emails to example.com to the same user at anotherdomain.tld. E.g., emails to thomas@example.com will be forwarded to thomas@anotherdomain.tld. info@example.com sales@example.com, billing@anotherdomain.tld Forward emails for info@example.com to two or more email addresses. All listed email addresses under destination receive a copy of the email.

The transport table can have entries like these: domain transport example.com : Delivers emails for example.com locally. This is as if this record would not exist in this table at all. example.com smtp:mail.anotherdomain.tld Delivers all emails for example.com via smtp to the server mail.anotherdomain.com. example.com smtp:mail.anotherdomain.tld:2025 Delivers all emails for example.com via smtp to the server mail.anotherdomain.com, but on port 2025, not 25 which is the default port for smtp. example.com

smtp:[1.2.3.4] smtp:[1.2.3.4]:2025 smtp:[mail.anotherdomain.tld] The square brackets prevent Postfix from doing lookups of the MX DNS record for the address in square brackets. Makes sense for IP addresses. .example.com smtp:mail.anotherdomain.tld Mail for any subdomain of example.com is delivered to mail.anotherdomain.tld.

  • smtp:mail.anotherdomain.tld All emails are delivered to mail.anotherdomain.tld.

joe@example.com smtp:mail.anotherdomain.tld Emails for joe@example.com are delivered to mail.anotherdomain.tld.

See

man transport

for more details.

Please keep in mind that the order of entries in the transport table is important! The entries will be followed from the top to the bottom.

Important: Postfix uses a caching mechanism for the transports, therefore it might take a while until you changes in the transport table take effect. If you want them to take effect immediately, run

postfix reload

after you have made your changes in the transport table.


14 Send A Welcome Email For Creating Maildir

When you create a new email account and try to fetch emails from it (with POP3/IMAP) you will probably get error messages saying that the Maildir doesn't exist. The Maildir is created automatically when the first email arrives for the new account. Therefore it's a good idea to send a welcome email to a new account.

First, we install the mailx package:

apt-get install mailx

To send a welcome email to sales@example.com, we do this:

mailx sales@example.com

You will be prompted for the subject. Type in the subject (e.g. Welcome), then press ENTER, and in the next line type your message. When the message is finished, press ENTER again so that you are in a new line, then press CTRL+D; if you don't want to cc the mail, press ENTER again:

root@server1:/usr/local/sbin# mailx sales@example.com Subject: Welcome <-- ENTER Welcome! Have fun with your new mail account. <-- ENTER <-- CTRL+D Cc: <-- ENTER root@server1:/usr/local/sbin#

15 Installing SquirrelMail

SquirrelMail is a webmail interface that will let your users send and receive emails in a browser. This chapter shows how to install it and adjust it to our setup so that users can even change their email account password from the SquirrelMail interface.

To install SquirrelMail, we run:

apt-get install squirrelmail php-pear

Next we copy the Apache configuration that comes with the SquirrelMail package to the /etc/apache2/conf.d directory and restart Apache:

cp /etc/squirrelmail/apache.conf /etc/apache2/conf.d/squirrelmail.conf /etc/init.d/apache2 restart

SquirrelMail comes with some pre-installed plugins, unfortunately none of them is capable of letting us change our email password in our MySQL database. But there's the Change SQL Password plugin which we can install manually:

The plugin depends on the Pear-DB package so we install it:

pear install DB

Then we install the Change SQL Password plugin itself:

cd /usr/share/squirrelmail/plugins wget http://www.squirrelmail.org/countdl.php?fileurl=http%3A%2F%2Fwww.squirrelmail.org%2Fplugins%2Fchange_sqlpass-3.3-1.2.tar.gz tar xvfz change_sqlpass-3.3-1.2.tar.gz cd change_sqlpass cp config.php.sample config.php

Now we must edit config.php and adjust it to our setup. Please adjust the $csp_dsn, $lookup_password_query, $password_update_queries, $password_encryption, $csp_salt_static, and $csp_delimiter variables as follows and comment out $csp_salt_query:

vi config.php

[...] $csp_dsn = 'mysql://mail_admin:mail_admin_password@localhost/mail'; [...] $lookup_password_query = 'SELECT count(*) FROM users WHERE email = "%1" AND password = %4'; [...] $password_update_queries = array('UPDATE users SET password = %4 WHERE email = "%1"'); [...] $password_encryption = 'MYSQLENCRYPT'; [...] $csp_salt_static = 'LEFT(password, 2)'; [...] //$csp_salt_query = 'SELECT salt FROM users WHERE username = "%1"'; [...] $csp_delimiter = '@'; [...]

The complete file looks as follows:

<?php

/** 

 * SquirrelMail Change SQL Password Plugin
 * Copyright (C) 2001-2002 Tyler Akins
 *               2002 Thijs Kinkhorst <kink@users.sourceforge.net>
 *               2002-2005 Paul Lesneiwski <paul@openguild.net>
 * This program is licensed under GPL. See COPYING for details
 *
 * @package plugins
 * @subpackage Change SQL Password
 *
 */



  // Global Variables, don't touch these unless you want to break the plugin
  //
  global $csp_dsn, $password_update_queries, $lookup_password_query,
         $force_change_password_check_query, $password_encryption,
         $csp_salt_query, $csp_salt_static, $csp_secure_port,
         $csp_non_standard_http_port, $csp_delimiter, $csp_debug,
         $min_password_length, $max_password_length, $include_digit_in_password,
         $include_uppercase_letter_in_password, $include_lowercase_letter_in_password,
         $include_nonalphanumeric_in_password;



  // csp_dsn
  //
  // Theoretically, any SQL database supported by Pear should be supported
  // here.  The DSN (data source name) must contain the information needed
  // to connect to your database backend. A MySQL example is included below.
  // For more details about DSN syntax and list of supported database types,
  // please see:
  //   http://pear.php.net/manual/en/package.database.db.intro-dsn.php
  //
  $csp_dsn = 'mysql://mail_admin:mail_admin_password@localhost/mail';



  // lookup_password_query
  //
  // This plugin will always verify the user's old password
  // against their login password, but an extra check can also
  // be done against the database for more security if you
  // desire.  If you do not need the extra password check,
  // make sure this setting is empty.
  //
  // This is a query that returns a positive value if a user
  // and password pair are found in the database.
  //
  // This query should return one value (one row, one column), the
  // value being ideally a one or a zero, simply indicating that
  // the user/password pair does in fact exist in the database.
  //
  //   %1 in this query will be replaced with the full username
  //      (including domain), such as "jose@example.com"
  //   %2 in this query will be replaced with the username (without
  //      any domain portion), such as "jose"
  //   %3 in this query will be replaced with the domain name,
  //      such as "example.com"
  //   %4 in this query will be replaced with the current (old)
  //      password in whatever encryption format is needed per other
  //      plugin configuration settings (Note that the syntax of
  //      the password will be provided depending on your encryption
  //      choices, so you NEVER need to provide quotes around this
  //      value in the query here.)
  //   %5 in this query will be replaced with the current (old)
  //      password in unencrypted plain text.  If you do not use any
  //      password encryption, %4 and %5 will be the same values,
  //      except %4 will have double quotes around it and %5 will not.
  //
  //$lookup_password_query = ;
  // TERRIBLE SECURITY: $lookup_password_query = 'SELECT count(*) FROM users WHERE username = "%1" AND plain_password = "%5"';
  //$lookup_password_query = 'SELECT count(*) FROM users WHERE username = "%1" AND crypt_password = %4';
  $lookup_password_query = 'SELECT count(*) FROM users WHERE email = "%1" AND password = %4';



  // password_update_queries
  //
  // An array of SQL queries that will all be executed
  // whenever a password change attempt is made.
  //
  // Any number of queries may be included here.
  // The queries will be executed in the order given here.
  //
  //   %1 in all queries will be replaced with the full username
  //      (including domain), such as "jose@example.com"
  //   %2 in all queries will be replaced with the username (without
  //      any domain portion), such as "jose"
  //   %3 in all queries will be replaced with the domain name,
  //      such as "example.com"
  //   %4 in all queries will be replaced with the new password
  //      in whatever encryption format is needed per other
  //      plugin configuration settings (Note that the syntax of
  //      the password will be provided depending on your
  //      encryption choices, so you NEVER need to provide quotes
  //      around this value in the queries here.)
  //   %5 in all queries will be replaced with the new password
  //      in unencrypted plain text - BEWARE!  If you do not use
  //      any password encryption, %4 and %5 will be the same
  //      values, except %4 will have double quotes around it
  //      and %5 will not.
  //

// $password_update_queries = array( // 'UPDATE users SET crypt_password = %4 WHERE username = "%1"', // 'UPDATE user_flags SET force_change_pwd = 0 WHERE username = "%1"', // 'UPDATE users SET crypt_password = %4, force_change_pwd = 0 WHERE username = "%1"', // ); 

  $password_update_queries = array('UPDATE users SET password = %4 WHERE email = "%1"');



  // force_change_password_check_query
  //
  // A query that checks for a flag that indicates if a user
  // should be forced to change their password.  This query
  // should return one value (one row, one column) which is
  // zero if the user does NOT need to change their password,
  // or one if the user should be forced to change it now.
  //
  // This setting should be an empty string if you do not wish
  // to enable this functionality.
  //
  //   %1 in this query will be replaced with the full username
  //      (including domain), such as "jose@example.com"
  //   %2 in this query will be replaced with the username (without
  //      any domain portion), such as "jose"
  //   %3 in this query will be replaced with the domain name,
  //      such as "example.com"
  //
  //$force_change_password_check_query = 'SELECT IF(force_change_pwd = "yes", 1, 0) FROM users WHERE username = "%1"';
  //$force_change_password_check_query = 'SELECT force_change_pwd FROM users WHERE username = "%1"';
  $force_change_password_check_query = ;



  // password_encryption
  //
  // What encryption method do you use to store passwords
  // in your database?  Please use one of the following,
  // exactly as you see it:
  //
  //   NONE          Passwords are stored as plain text only
  //   MYSQLPWD      Passwords are stored using the MySQL password() function
  //   MYSQLENCRYPT  Passwords are stored using the MySQL encrypt() function
  //   PHPCRYPT      Passwords are stored using the PHP crypt() function
  //   MD5CRYPT      Passwords are stored using encrypted MD5 algorithm
  //   MD5           Passwords are stored as MD5 hash
  //
  //$password_encryption = 'MYSQLPWD';
  $password_encryption = 'MYSQLENCRYPT';



  // csp_salt_query
  // csp_salt_static
  //
  // Encryption types that need a salt need to know where to get
  // that salt.  If you have a constant, known salt value, you
  // should define it in $csp_salt_static.  Otherwise, leave that
  // value empty and define a value for the $csp_salt_query.
  //
  // Leave both values empty if you do not need (or use) salts
  // to encrypt your passwords.
  //
  // The query should return one value (one row, one column) which
  // is the salt value for the current user's password.  This
  // query is ignored if $csp_salt_static is anything but empty.
  //
  //   %1 in this query will be replaced with the full username
  //      (including domain), such as "jose@example.com"
  //   %2 in this query will be replaced with the username (without
  //      any domain portion), such as "jose"
  //   %3 in this query will be replaced with the domain name,
  //      such as "example.com"
  //
  //$csp_salt_static = 'LEFT(crypt_password, 2)';
  //$csp_salt_static = '"a4"';  // use this format with MYSQLENCRYPT
  //$csp_salt_static = '$2$blowsomefish$';  // use this format with PHPCRYPT
  //$csp_salt_static = ;
  $csp_salt_static = 'LEFT(password, 2)';

  //$csp_salt_query = 'SELECT SUBSTRING_INDEX(crypt_password, '$', 1) FROM users WHERE username = "%1"';
  //$csp_salt_query = 'SELECT SUBSTRING(crypt_password, (LENGTH(SUBSTRING_INDEX(crypt_password, '$', 2)) + 2)) FROM users WHERE username = "%1"';
  //$csp_salt_query = 'SELECT salt FROM users WHERE username = "%1"';
  //$csp_salt_query = ;



  // csp_secure_port
  //
  // You may ensure that SSL encryption is used during password
  // change by setting this to the port that your HTTPS is served
  // on (443 is typical).  Set to zero if you do not wish to force
  // an HTTPS connection when users are changing their passwords.
  //
  // You may override this value for certain domains, users, or
  // service levels through the Virtual Host Login (vlogin) plugin
  // by setting a value(s) for $vlogin_csp_secure_port in the vlogin
  // configuration.
  //
  $csp_secure_port = 0;
  //$csp_secure_port = 443;



  // csp_non_standard_http_port
  //
  // If you serve standard HTTP web requests on a non-standard
  // port (anything other than port 80), you should specify that
  // port number here.  Set to zero otherwise.
  //
  // You may override this value for certain domains, users, or
  // service levels through the Virtual Host Login (vlogin) plugin
  // by setting a value(s) for $vlogin_csp_non_standard_http_port
  // in the vlogin configuration.
  //
  //$csp_non_standard_http_port = 8080;
  $csp_non_standard_http_port = 0;



  // min_password_length
  // max_password_length
  // include_digit_in_password
  // include_uppercase_letter_in_password
  // include_lowercase_letter_in_password
  // include_nonalphanumeric_in_password
  //
  // You can set the minimum and maximum password lengths that
  // you accept or leave those settings as zero to indicate that
  // no limit should be applied.
  //
  // Turn on any of the other settings here to check that the
  // new password contains at least one digit, upper case letter,
  // lower case letter and/or one non-alphanumeric character.
  //
  $min_password_length = 6;
  $max_password_length = 0;
  $include_digit_in_password = 0;
  $include_uppercase_letter_in_password = 0;
  $include_lowercase_letter_in_password = 0;
  $include_nonalphanumeric_in_password = 0;



  // csp_delimiter
  //
  // if your system has usernames with something other than
  // an "@" sign separating the user and domain portion,
  // specify that character here
  //
  //$csp_delimiter = '|';
  $csp_delimiter = '@';



  // debug mode
  //
  $csp_debug = 0;


?>

The Change SQL Password plugin also depends on the Compatibility plugin which we install as follows:

cd /usr/share/squirrelmail/plugins wget http://www.squirrelmail.org/countdl.php?fileurl=http%3A%2F%2Fwww.squirrelmail.org%2Fplugins%2Fcompatibility-2.0.11-1.0.tar.gz tar xvfz compatibility-2.0.11-1.0.tar.gz

Now we must go into the SquirrelMail configuration and tell SquirrelMail that we use Courier as our POP3 and IMAP server and enable the Change SQL Password and the Compatibility plugins:

/usr/sbin/squirrelmail-configure

You'll see the following menu. Navigate through it as indicated:

SquirrelMail Configuration : Read: config.php (1.4.0)

Main Menu -- 1. Organization Preferences 2. Server Settings 3. Folder Defaults 4. General Options 5. Themes 6. Address Books 7. Message of the Day (MOTD) 8. Plugins 9. Database 10. Languages

D. Set pre-defined settings for specific IMAP servers

C Turn color on S Save data Q Quit

Command >> <-- D


SquirrelMail Configuration : Read: config.php

While we have been building SquirrelMail, we have discovered some preferences that work better with some servers that don't work so well with others. If you select your IMAP server, this option will set some pre-defined settings for that server.

Please note that you will still need to go through and make sure everything is correct. This does not change everything. There are only a few settings that this will change.

Please select your IMAP server: 

   bincimap    = Binc IMAP server
   courier     = Courier IMAP server
   cyrus       = Cyrus IMAP server
   dovecot     = Dovecot Secure IMAP server
   exchange    = Microsoft Exchange IMAP server
   hmailserver = hMailServer
   macosx      = Mac OS X Mailserver
   mercury32   = Mercury/32
   uw          = University of Washington's IMAP server

   quit        = Do not change anything

Command >> <-- courier 


             imap_server_type = courier
        default_folder_prefix = INBOX.
                 trash_folder = Trash
                  sent_folder = Sent
                 draft_folder = Drafts
           show_prefix_option = false
         default_sub_of_inbox = false

show_contain_subfolders_option = false 

           optional_delimiter = .
                delete_folder = true

Press any key to continue... <-- press some key


SquirrelMail Configuration : Read: config.php (1.4.0)

Main Menu -- 1. Organization Preferences 2. Server Settings 3. Folder Defaults 4. General Options 5. Themes 6. Address Books 7. Message of the Day (MOTD) 8. Plugins 9. Database 10. Languages

D. Set pre-defined settings for specific IMAP servers

C Turn color on S Save data Q Quit

Command >> <-- 8


SquirrelMail Configuration : Read: config.php (1.4.0)

Plugins 

 Installed Plugins

 Available Plugins:
   1. abook_take
   2. administrator
   3. bug_report
   4. calendar
   5. change_sqlpass
   6. compatibility
   7. delete_move_next
   8. demo
   9. filters
   10. fortune
   11. info
   12. listcommands
   13. mail_fetch
   14. message_details
   15. newmail
   16. sent_subfolders
   17. spamcop
   18. squirrelspell
   19. test
   20. translate

R Return to Main Menu C Turn color on S Save data Q Quit

Command >> <-- 6 (or whatever number the compatibility plugin has - it's needed by the change_sqlpass plugin)


SquirrelMail Configuration : Read: config.php (1.4.0)

Plugins 

 Installed Plugins
   1. compatibility

 Available Plugins:
   2. abook_take
   3. administrator
   4. bug_report
   5. calendar
   6. change_sqlpass
   7. delete_move_next
   8. demo
   9. filters
   10. fortune
   11. info
   12. listcommands
   13. mail_fetch
   14. message_details
   15. newmail
   16. sent_subfolders
   17. spamcop
   18. squirrelspell
   19. test
   20. translate

R Return to Main Menu C Turn color on S Save data Q Quit

Command >> <-- 6 (the number of the change_sqlpass plugin)


SquirrelMail Configuration : Read: config.php (1.4.0)

Plugins 

 Installed Plugins
   1. compatibility
   2. change_sqlpass

 Available Plugins:
   3. abook_take
   4. administrator
   5. bug_report
   6. calendar
   7. delete_move_next
   8. demo
   9. filters
   10. fortune
   11. info
   12. listcommands
   13. mail_fetch
   14. message_details
   15. newmail
   16. sent_subfolders
   17. spamcop
   18. squirrelspell
   19. test
   20. translate

R Return to Main Menu C Turn color on S Save data Q Quit

Command >> <-- S


SquirrelMail Configuration : Read: config.php (1.4.0)

Plugins 

 Installed Plugins
   1. compatibility
   2. change_sqlpass

 Available Plugins:
   3. abook_take
   4. administrator
   5. bug_report
   6. calendar
   7. delete_move_next
   8. demo
   9. filters
   10. fortune
   11. info
   12. listcommands
   13. mail_fetch
   14. message_details
   15. newmail
   16. sent_subfolders
   17. spamcop
   18. squirrelspell
   19. test
   20. translate

R Return to Main Menu C Turn color on S Save data Q Quit

Command >> S

Data saved in config.php Press enter to continue... <-- press some key


SquirrelMail Configuration : Read: config.php (1.4.0)

Plugins 

 Installed Plugins
   1. compatibility
   2. change_sqlpass

 Available Plugins:
   3. abook_take
   4. administrator
   5. bug_report
   6. calendar
   7. delete_move_next
   8. demo
   9. filters
   10. fortune
   11. info
   12. listcommands
   13. mail_fetch
   14. message_details
   15. newmail
   16. sent_subfolders
   17. spamcop
   18. squirrelspell
   19. test
   20. translate

R Return to Main Menu C Turn color on S Save data Q Quit

Command >> <-- Q

Now you can type in http://server1.example.com/squirrelmail or http://192.168.0.100/squirrelmail in your browser to access SquirrelMail.

Log in with your email address (e.g. sales@example.com) and your password:

Click to enlarge

You should find the welcome email in your inbox:

Click to enlarge

Click to enlarge

To change your password, go to Options and then select Change Password:

Click to enlarge

Type in your current password and then your new password twice:

Click to enlarge

SquirrelMail will tell you if the password has been changed successfully:

Click to enlarge

Источник — https://wiki.nntc.nnov.ru/index.php?title=Лабораторные_работы_по_ПО/Настройка_почтового_сервера_Postfix&oldid=6171