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сервис_mta

Сервис MTA

Протокол SMTP

gate# telnet server.corpX.un 25
...
HELO gate.corpX.un
...
MAIL FROM: root@gate.corpX.un
...
RCPT TO: user1@server.corpX.un
...
DATA
...
From: root@gate.corpX.un
To: user1@server.corpX.un
Subject: test

test
.

QUIT

Настройка MTA

Установка и настройка MTA на обработку почты домена hostname

Debian/Ubuntu (postfix)

root@server:~# debconf-set-selections <<< "postfix postfix/main_mailer_type string 'Internet Site'"
root@server:~# debconf-set-selections <<< "postfix postfix/mailname string corpX.un"

root@server:~# apt install postfix

root@server:~# debconf-show postfix | grep destinations

root@server:~# man 1 postconf

root@server:~# man 5 postconf

root@server:~# postconf -n

root@server:~# postconf -d

Exim

!!! В конфигурации остается запрет отправлять почту на сервера с “серыми” ip (на курсах)

# dpkg-reconfigure exim4-config
...
intenet site, все остальное по умолчанию
...

FreeBSD (sendmail)

[server:~] # cat /etc/rc.conf
...
sendmail_enable="YES"
[server:~] # /etc/rc.d/sendmail restart

[server:~] # more /etc/mail/sendmail.cf

[server:~] # more /usr/share/sendmail/cf/README

Настройка MTA на обработку почты домена corpX.un

Настройка DNS

Настройка MTA postfix (Debian/Ubuntu)

root@server:~# cat /etc/postfix/main.cf
...
mydestination = server.corpX.un, localhost.corpX.un, , localhost, corpX.un
...
root@server:~# postconf

root@server:~# service postfix check

root@server:~# service postfix reload

Настройка MTA sendmail (FreeBSD)

[server:~] # cd /etc/mail

[server:/etc/mail] # cat server.corpX.un.mc
OSTYPE(freebsd6)
FEATURE(use_cw_file)
MAILER(local)
MAILER(smtp)
[server:/etc/mail] # cat local-host-names
corpX.un
[server:/etc/mail] # make cf

[server:/etc/mail] # make install

[server:/etc/mail] # /etc/rc.d/sendmail restart

Настройка MTA на релеинг почты из LAN

postfix (Debian/Ubuntu)

root@gate:~# cat /etc/postfix/main.cf
...
mynetworks = ... 192.168.X.0/24
...
root@gate:~# service postfix reload

sendmail (FreeBSD)

[server:/etc/mail] # cat server.corpX.un.mc
OSTYPE(freebsd6)
...
FEATURE(access_db, `hash -o -T<TMPF> /etc/mail/access')
...
MAILER(local)
MAILER(smtp)
[server:/etc/mail] # cat access
192.168.X  RELAY
[server:/etc/mail] # make maps

[server:/etc/mail] # make install

[server:/etc/mail] # /etc/rc.d/sendmail restart

Настройка MTA на использование MTA провайдера

postfix (Debian/Ubuntu)

root@server:~# cat /etc/postfix/main.cf
...
relayhost = gate.corpX.un
...
root@server:~# service postfix reload

sendmail (FreeBSD)

[server:/etc/mail] # cat server.corpX.un.mc
OSTYPE(freebsd6)
...
define(`SMART_HOST', `gate.corpX.un')
...
MAILER(local)
MAILER(smtp)
[server:/etc/mail] # make cf

[server:/etc/mail] # make install

[server:/etc/mail] # /etc/rc.d/sendmail restart

Настройка MTA на релеинг почты домена corpX.un

Debian/Ubuntu

root@gate:~# cat /etc/postfix/main.cf
...
relay_domains = $mydestination, corpX.un
root@gate:~# service postfix reload

root@gate:~# tail -f /var/log/mail.log

FreeBSD

[gate:/etc/mail] # cat gate.corpX.un.mc
OSTYPE(freebsd6)
FEATURE(access_db, `hash -o -T<TMPF> /etc/mail/access')
MAILER(local)
MAILER(smtp)
[gate:/etc/mail] # make install

[gate:/etc/mail] # /etc/rc.d/sendmail restart

[gate:/etc/mail] # cat access
corpX.un  RELAY
[gate:/etc/mail] # make maps

[gate:~] # tail -f /var/log/maillog

Настройка MTA на релеинг почты на основе аутентификации

Postfix

# cat /etc/postfix/main.cf
...
smtpd_tls_cert_file = /root/server.crt
smtpd_tls_key_file = /root/server.key
smtpd_use_tls = yes
...
smtpd_relay_restrictions = ... permit_sasl_authenticated ...
...
smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot

#for kerberos gssapi
line_length_limit = 8192

Использование почтовых псевдонимов

Debina/Ubuntu

# cat /etc/aliases
...
root: userX@isp.un

# root: "|logger -t mail-to-root -p mail.info"

#nagios: userX@isp.un
#nagios: student@corpX.un

support: user1, user2
...
# newaliases

# apt install logwatch
...

# mail root

Использование виртуальных почтовых доменов

Настройка DNS

Запись A или MX для домена compX.un настраивает преподаватель

server# host compX.un
...

Добавление учетных записей пользователей виртуальных доменов

Настройка MTA на поддержку виртуального домена

postfix (Debian/Ubuntu)
root@server:~# cat /etc/postfix/main.cf
...
mydestination = server.corpX.un, localhost.corpX.un, corpX.un, compX.un, localhost
virtual_alias_maps = hash:/etc/postfix/virtual
...
root@server:~# cat /etc/postfix/virtual
info@corpX.un user1
info@compX.un user2
root@server:~# postmap /etc/postfix/virtual

root@server:~# service postfix reload

gate.isp.un$ mail info@corpX.un

gate.isp.un$ mail info@compX.un

server# mail -u user1

server# mail -u user2
sendmail (FreeBSD)
[server:/etc/mail] # cat local-host-names
corpX.un
compX.un
[server:/etc/mail] # cat server.corpX.un.mc
OSTYPE(freebsd6)
...
FEATURE(virtusertable, `hash -o /etc/mail/virtusertable')
...
MAILER(local)
MAILER(smtp)
[server:/etc/mail] # cat virtusertable
info@corpX.un user1
info@compX.un user2
[server:/etc/mail] # make maps

[server:/etc/mail] # make install

[server:/etc/mail] # /etc/rc.d/sendmail restart

Сокрытие названия сервиса

Debian/Ubuntu (postfix)

# postconf -d | grep mail_name

# postconf -e "mail_name = Exchange"

# postconf -e 'smtpd_banner = $myhostname ESMTP $mail_name (Windows 2008R2)'

# service postfix reload

FreeBSD (sendmail)

[server:/etc/mail] # cat server.corpX.un.mc
OSTYPE(freebsd6)
...
define(`confSMTP_LOGIN_MSG', `$j Exchange (Windows 2008R2)')
...
MAILER(local)
MAILER(smtp)
[server:/etc/mail] # make cf

[server:/etc/mail] # make install

[server:/etc/mail] # /etc/rc.d/sendmail restart

Управление очередью сообщений

Postfix

# mailq | grep apache@hoster.bmstu.ru | grep '*' | cut -d'*' -f 1 | postsuper -d -
сервис_mta.txt · Last modified: 2023/03/09 09:34 by val