postfix安装和简单配置

postfix安装和简单配置
postfix
postfix安装和简单配置
一,安装：
[root@station10 ~]# yum install -y postfix
二，postconf工具介绍
 
Display defaults: postconf -d
Display current non-default settings: postconf -n
Modify main.cf:postconf -e key=value
Show supported map types: postconf -m
三,Incomming Postfix Configuration
修改/etc/postfix/main.cf文件
1,监听所有端口：
inet_interfaces = all
2,specify each name and alias by which the server may be referred （监听主机）
mydestination = $myhostname,localhost,mydomain,localhot,$mydomain
3，把默认的配置inet_interfaces = localhost 修改成：
inet_interfaces = all
4，监听主机默认可以不用改。
四，outgoing postfix configuration
配置/etc/postfix/main.cf文件
myorigin = $mydomain
masquerade_exceptions = root
此次配置成：
myorigin = $myhostname
masquerade_exceptions = root
测试上面两步：
5，station10用的是postfix发送到邮件，station12是用sendmail接收的。
station10发送邮件：
[root@station10 ~]# mail
Subject: test
postfix
.
Cc:
[root@station10 ~]#

station12接收邮件：
[root@station12 ~]# mail
Mail version 8.1 6/6/93.  Type ? for help.
"/var/spool/mail/root": 1 message 1 new
>N  1   Wed Oct 22 08:13  15/629   "test"
& 1
Message 1:
From   Wed Oct 22 08:13:25 2008
To:
Subject: test
Date: Wed, 22 Oct 2008 01:00:25 +0800 (CST)
From: (root)
postfix
& q
Saved 1 message in mbox
[root@station12 ~]#
6，更改outgoing postfix 配置：
此次配置成：
myorigin = $mydomain
masquerade_exceptions = root
测试发送：
[root@station10 ~]# mail
Subject: test
myorigin
.
Cc:
[root@station10 ~]#
接收查看信息：
[root@station12 ~]# mail
Mail version 8.1 6/6/93.  Type ? for help.
"/var/spool/mail/root": 1 message 1 new
>N  1       Wed Oct 22 08:19  15/600   "test"
& 1
Message 1:
From   Wed Oct 22 08:19:01 2008
To:
Subject: test
Date: Wed, 22 Oct 2008 01:06:00 +0800 (CST)
From: (root)
myorigin
& q
Saved 1 message in mbox
[root@station12 ~]#

五，inbound postfix aliases
1，本地别名配置和sendmail配置一样，都是修改/etc/aliases文件
   如果让修改直接生效，执行：
   [root@station10 ~]# postalias /etc/aliases
2，虚拟配置：
   (1),编辑/etc/postfix/mail.cf文件
   virtual_alias_maps = hash:/etc/postfix/virtual
   (2),/etc/postfix/mail.cf的格式和sendmail一样
   (3),rehash the file: postmap /etc/postfix/virtual
3, 实际配置：
   (1),在/etc/postfix/mail.cf文件末尾添加：
   virtual_alias_maps = hash:/etc/postfix/virtual
   (2), 在/etc/postfix/virtual文件末尾添加：
      
   (3),[root@station10 ~]# postmap  /etc/postfix/virtual
4, 测试：
本地别名测试：
[root@station10 ~]# mail xxx
Subject: test
send to xxx
.
Cc:
[root@station10 ~]# mail
Mail version 8.1 6/6/93.  Type ? for help.
"/var/spool/mail/root": 1 message 1 unread
>U  1   Wed Oct 22 01:34  15/487   "test"
& 1
Message 1:
From   Wed Oct 22 01:34:57 2008
X-Original-To: xxx
Delivered-To:
To:
Subject: test
Date: Wed, 22 Oct 2008 01:34:57 +0800 (CST)
From: (root)
send to xxx
& q
Saved 1 message in mbox
[root@station10 ~]#
虚拟别名测试：
[root@station10 ~]# mail
Subject: test
send to station10.example.com
.
Cc:
[root@station10 ~]#
在另外一台机器上收到邮件：
[root@station12 ~]# mail
Mail version 8.1 6/6/93.  Type ? for help.
"/var/spool/mail/root": 2 messages 2 new
>N  1       Wed Oct 22 08:43  15/609   "test"
N  2   Wed Oct 22 08:49  15/651   "test"
& 2
Message 2:
From   Wed Oct 22 08:49:10 2008
To:
Subject: test
Date: Wed, 22 Oct 2008 01:36:09 +0800 (CST)
From: (root)
send to station10.example.com
& q
Saved 1 message in mbox
Held 1 message in /var/spool/mail/root
[root@station12 ~]#

六，outbound address rewriting
1, Enable in /etc/postfix/main.cf
   smtp in the key name indicates SMTP only (not LMTP)
  
   smtp_generic_maps = hash:/etc/postfix/generic
2, define in /etc/postfix/generic
   

3,Rehash the file: postmap /etc/postfix/generic

测试：
[root@station10 ~]# mail
Subject: test
from to station12.example.com
.'
.
Cc:
[root@station10 ~]#

[root@station12 ~]# mail
Mail version 8.1 6/6/93.  Type ? for help.
"/var/spool/mail/root": 2 messages 1 new 2 unread
U  1       Wed Oct 22 08:43  16/619   "test"
>N  2        Wed Oct 22 09:04  16/621   "test"
& 2
Message 2:
From   Wed Oct 22 09:04:55 2008
To:
Subject: test
Date: Wed, 22 Oct 2008 01:51:53 +0800 (CST)
From: (root)
from to station12.example.com
.'
& q
Saved 1 message in mbox
Held 1 message in /var/spool/mail/root
[root@station12 ~]#

七，Postfix SMTP Restrictions
1,Create /etc/postfix/access
  untagged version of Sendmail access file
  rehash using postmap /etc/postfix/access
2,Edit main.cf
  
  smtpd_TAG_restrictions =
     check_TAG_access hash:/etc/postfix/access,...
TAG is one of sender,recipient,or client
Example:
 
   smtpd_recipient_restrictions =
     check_recipient_access hash:/etc/postfix/access,permit_mynetworks,reject_unauth_destination

八，postfix Operation
main.cf settings
    Server names:mydestination must contain server's name and aliases
    Listning interfaces:inet_interfaces = all
    Archive all messages:always_bcc = address
View SMTP exchange: mail -v
查看队列:postqueue -p
清空队列:postqueue -f
日志信息：tail -f /var/log/maillog

例子：
[root@station10 ~]# postqueue  -p
-Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient-------
865B8306C9      101 Wed Oct 22 01:25:43  root
                                         xxx
76670306C8      156 Wed Oct 22 01:24:15  root
                                        
-- 0 Kbytes in 2 Requests.
[root@station10 ~]# postqueue  -f

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