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笔记：

tag-icon • tag-icon linux postfix smtp email-server
笔记：

我已经安装了 postfix 2.11.3，并且我们的服务器上有多个 IP 地址，我们想要托管两个域，这些域是隔离的并在各自的 IP 上运行。

domain1  unix -       -       n       -       -       smtp
   -o smtp_bind_address=1.1.1.1
   -o smtp_helo_name=mail.abc.com
   -o syslog_name=postfix-mail.abc.com

domain2  unix -       -       n       -       -       smtp
   -o smtp_bind_address=2.2.2.2
   -o smtp_helo_name=mail.xyz.com
   -o syslog_name=postfix-mail.xyz.com

以下运输商/etc/postfix/sender_transport也定义在main.cf：

@abc.com    domain1:
@xyz.com    domain2:

重新启动 postfix 后，它停止监听端口25：

[[email protected]]# telnet 1.1.1.1 25
Trying 1.1.1.1...
telnet: connect to address 1.1.1.1: Connection refused

但是如果我使用以下行来master.cf监听 25，并且我可以通过 telnet 看到横幅：

1.1.1.1:smtp inet  n - n - - smtpd -o myhostname=mail.abc.com 
2.2.2.2:smtp inet  n - n - - smtpd -o myhostname=mail.xyz.com

但我想告诉我的邮件服务器，当你发送电子邮件时使用特定的域，就像sender_transport

我做错了什么？

笔记：

我已从master.cf域 1 和域 2 中删除以下行，并将其替换为上面的行：

smtp      inet  n       -       n       -       -       smtpd

答案1

解决方案 - 需要 Postfix 版本 2.7 或更高版本：

/etc/postfix/master.cf

#smtp      inet  n       -       n       -       -       smtpd
127.0.0.1:smtp inet  n     -       n       -       -       smtpd
      -o syslog_name=postfix-localhost
      -o smtp_helo_name=localhost
      -o smtp_bind_address=127.0.0.1
      -o myhostname=localhost

65.xxx.xxx.100:smtp inet  n     -       n       -       -       smtpd
      -o syslog_name=postfix-mail.abc.com
      -o smtp_helo_name=mail.abc.com
      -o smtp_bind_address=65.xxx.xxx.100
      -o myhostname=mail.abc.com

65.xxx.xxx.200:smtp inet  n     -       n       -       -       smtpd
      -o syslog_name=postfix-mail.xyz.com
      -o smtp_helo_name=mail.zyx.com
      -o smtp_bind_address=65.xxx.xxx.200
      -o myhostname=mail.xyz.com

abc-out  unix -       -       n       -       -       smtp
   -o smtp_bind_address=65.xxx.xxx.100
   -o smtp_helo_name=mail.abc.com
   -o syslog_name=postfix-mail.abc.com

xyz-out  unix -       -       n       -       -       smtp
   -o smtp_bind_address=65.xxx.xxx.200
   -o smtp_helo_name=mail.xyz.com
   -o syslog_name=postfix-mail.xyz.com

/etc/postfix/main.cf

sender_dependent_default_transport_maps = hash:/etc/postfix/sender_transport

在/etc/postfix/sender_transport中

# Use source IP - 65.xxx.xxx.100
@abc.com                abc-out:
@example.com            abc-out:

# Use source IP - 65.xxx.xxx.200 
@xyz.com                xyz-out:

运行命令生成哈希数据库

postmap hash:/etc/postfix/sender_transport

重新启动/重新加载 postfix

service postfix reload

测试

[root@localhost ~]# telnet 65.xxx.xxx.200 25
Trying 65.xxx.xxx.200...
Connected to 65.xxx.xxx.200.
Escape character is '^]'.
220 mail.xyz.com ESMTP Postfix

发送电子邮件测试

[root@localhost ~]# telnet localhost 25
Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 localhost ESMTP Postfix
helo localhost
250 localhost
mail from: [email protected]
250 2.1.0 Ok
rcpt to: [email protected]
250 2.1.5 Ok
data
354 End data with <CR><LF>.<CR><LF>
Hello world!
.
250 2.0.0 Ok: queued as 93E708207BA

转到 Gmail 收件箱 > 显示原始邮件

Delivered-To: [email protected]
Received: by 10.xxx.xxx.xxx with SMTP id w64csp782609qgd;
        Tue, 9 Dec 2014 09:35:57 -0800 (PST)
X-Received: by 10.xxx.xxx.xxx with SMTP id o28mr4132552yha.168.1418146557180;
        Tue, 09 Dec 2014 09:35:57 -0800 (PST)
Return-Path: <[email protected]>
Received: from mail.xyz.com ([65.xxx.xxx.200])
        by mx.google.com with ESMTPS id n10si743294ykc.114.2014.12.09.09.35.56
        for <[email protected]>
        (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
        Tue, 09 Dec 2014 09:35:56 -0800 (PST)
...
...
Message-Id: <[email protected]>
Date: Tue,  9 Dec 2014 12:37:11 -0500 (EST)
From: [email protected]

Hello world!

瞧！看到它使用65.xxx.xxx.200IP 地址发送电子邮件。

Received: from mail.xyz.com ([65.xxx.xxx.200])

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