sendmail配置

一,安装：
[root@station10 ~]# yum install -y sendmail*

[root@station10 ~]# rpm -aq | grep sendmail
sendmail-doc-8.13.8-2.el5
sendmail-cf-8.13.8-2.el5
sendmail-devel-8.13.8-2.el5
sendmail-8.13.8-2.el5
[root@station10 ~]# 


二,sendmail进入的配置
1,修改 /etc/mail/sendmail.mc 文件，让监听所有网卡地址，在前面加上dnl #  即可：

[root@station10 mail]# vi sendmail.mc
dnl # DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl

2,修改 /etc/mail/local-host-names 文件。
[root@station10 mail]# cat local-host-names 
# local-host-names - include all aliases for your machine here.
station10.example.com
[root@station10 mail]# 

3,重启 sendmail

[root@station10 mail]# service sendmail restart
Shutting down sendmail: [FAILED]
Starting sendmail: [  OK  ]
Starting sm-client: [  OK  ]
[root@station10 mail]# 

4,查看监听的端口：
[root@station10 ~]# netstat -tulpn | grep sendmail
tcp        0      0 0.0.0.0:25                  0.0.0.0:*                   LISTEN      1094/sendmail: acce 
[root@station10 ~]# 


5,测试
[root@station10 ~]# mail -v root
Subject: test mail
test.
.
Cc: 
root... Connecting to [127.0.0.1] via relay...
220 station10.example.com ESMTP Sendmail 8.13.8/8.13.8; Tue, 21 Oct 2008 00:13:23 +0800
>>> EHLO station10.example.com
250-station10.example.com Hello localhost.localdomain [127.0.0.1], pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-DELIVERBY
250 HELP
>>> MAIL From:< [email protected]> SIZE=35
250 2.1.0 < [email protected]>... Sender ok
>>> RCPT To:< [email protected]>
>>> DATA
250 2.1.5 < [email protected]>... Recipient ok
354 Enter mail, end with "." on a line by itself
>>> .
250 2.0.0 m9KGDNiO001110 Message accepted for delivery
root... Sent (m9KGDNiO001110 Message accepted for delivery)
Closing connection to [127.0.0.1]
>>> QUIT
221 2.0.0 station10.example.com closing connection
[root@station10 ~]# 


三,sendmail 出去的配置
1,umcomment the following linex in /etc/mail/sendmail.mc

EXPOSED_USER(`root')dnl
FEATURE(masquerade_envelope)dnl
MASQUERADE_AS('station10.example.com')dnl
FEATURE(masquerade_entire_domain)dnl

2，测试
[root@station10 ~]# mail -v [email protected]
Subject: test
from station10.example.com
.
Cc: 
[email protected]... Connecting to [127.0.0.1] via relay...
220 station10.example.com ESMTP Sendmail 8.13.8/8.13.8; Tue, 21 Oct 2008 00:43:26 +0800
>>> EHLO station10.example.com
250-station10.example.com Hello localhost.localdomain [127.0.0.1], pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-DELIVERBY
250 HELP
>>> MAIL From:< [email protected]> SIZE=73
250 2.1.0 < [email protected]>... Sender ok
>>> RCPT To:< [email protected]>
>>> DATA
250 2.1.5 < [email protected]>... Recipient ok
354 Enter mail, end with "." on a line by itself
>>> .
250 2.0.0 m9KGhQAN001280 Message accepted for delivery
[email protected]... Sent (m9KGhQAN001280 Message accepted for delivery)
Closing connection to [127.0.0.1]
>>> QUIT
221 2.0.0 station10.example.com closing connection
[root@station10 ~]# 

3，在其他机器上接收邮件
[root@station12 ~]# mail
Mail version 8.1 6/6/93.  Type ? for help.
"/var/spool/mail/root": 1 message 1 new
>N  1 [email protected]  Tue Oct 21 07:56  19/905   "test"
& 1
Message 1:
From [email protected]  Tue Oct 21 07:56:06 2008
Date: Tue, 21 Oct 2008 00:43:26 +0800
From: root < [email protected]>
To: [email protected]
Subject: test

from station10.example.com

& q
Saved 1 message in mbox
[root@station12 ~]# 


四,进入的邮箱别名
1,本地别名配置:/etc/aliases
[root@station10 mail]# vi /etc/aliases
新增：
xxx:      root

xxx这个名字可以是不存在的用户，用户名后面记得加:

2，执行newaliases让配置生效。
[root@station10 ~]# newaliases
/etc/aliases: 77 aliases, longest 10 bytes, 772 bytes total
[root@station10 ~]# 

3,测试
[root@station10 ~]# mail xxx
Subject: test inbound
send to xxx
.
Cc: 
[root@station10 ~]# mail
Mail version 8.1 6/6/93.  Type ? for help.
"/var/spool/mail/root": 1 message 1 new
>N  1 [email protected]  Tue Oct 21 00:51  16/659   "test inbound"
& 1
Message 1:
From [email protected]  Tue Oct 21 00:51:43 2008
Date: Tue, 21 Oct 2008 00:51:43 +0800
From: root < [email protected]>
To: [email protected]
Subject: test inbound

send to xxx

& q
Saved 1 message in mbox
[root@station10 ~]# 


4，虚拟别名配置:
修改/etc/mail/virtusertable文件，增加下面一行：
[email protected]     [email protected]

[root@station10 mail]# cat virtusertable
[email protected]     [email protected]
[root@station10 mail]# 

5，重启服务
[root@station10 mail]# service sendmail restart
Shutting down sm-client: [  OK  ]
Shutting down sendmail: [  OK  ]
Starting sendmail: [  OK  ]
Starting sm-client: [  OK  ]
[root@station10 mail]#


6，测试：
发送到station10服务器中：
[root@station10 mail]# mail [email protected]
Subject: test inbound sendmail Aliases
send to station10
.
Cc: 
[root@station10 mail]# 

在station12服务器中接收到数据：
Saved 1 message in mbox
[root@station12 ~]# mail
Mail version 8.1 6/6/93.  Type ? for help.
"/var/spool/mail/root": 1 message 1 new
>N  1 [email protected]  Tue Oct 21 08:13  19/921   "test inbound sendmail"
& 1
Message 1:
From [email protected]  Tue Oct 21 08:13:36 2008
Date: Tue, 21 Oct 2008 01:00:56 +0800
From: root < [email protected]>
To: [email protected]
Subject: test inbound sendmail Aliases

send to station10

& q
Saved 1 message in mbox
[root@station12 ~]# 


五，出去的地址重写
1，在/etc/mail/sendmail.mc中增加如下内容：
FEATURE(genericstable)dnl
FEATURE(`always_add_domain')dnl
GENERICS_DOMAIN_FILE(`/etc/mail/local-host-names')dnl

例子，文件最后几行：
dnl MASQUERADE_DOMAIN(mydomain.lan)dnl
FEATURE(genericstable)dnl
FEATURE(`always_add_domain')dnl
GENERICS_DOMAIN_FILE(`/etc/mail/local-host-names')dnl
MAILER(smtp)dnl
MAILER(procmail)dnl
dnl MAILER(cyrusv2)dnl



2，新增文件 /etc/mail/genericstable，并添加如下内容：
[root@station10 mail]# cat /etc/mail/genericstable                    
[email protected]     [email protected]                         
[email protected] [email protected]                                                        
[root@station10 mail]#     

3,重启服务
[root@station10 mail]# /etc/init.d/sendmail restart
Shutting down sm-client: [  OK  ]
Shutting down sendmail: [  OK  ]
Starting sendmail: [  OK  ]
Starting sm-client: [  OK  ]
[root@station10 mail]# 

4，测试：
发送邮件给station12.example.com
[root@station10 ~]# mail [email protected]
Subject: station10.example.com
test
.
Cc: 
[root@station10 ~]# 

查收接收到邮件：
[root@station12 ~]# mail
Mail version 8.1 6/6/93.  Type ? for help.
"/var/spool/mail/root": 2 messages 2 new
>N  1 [email protected]  Tue Oct 21 11:14  69/2334  "Logwatch for station1"
 N  2 [email protected]       Wed Oct 22 02:39  19/867   "station10.example.com"
& 2
Message 2:
From [email protected]  Wed Oct 22 02:39:53 2008
Date: Tue, 21 Oct 2008 19:26:56 +0800
From: root < [email protected]>
To: [email protected]
Subject: station10.example.com

test

& q
Saved 1 message in mbox
Held 1 message in /var/spool/mail/root
[root@station12 ~]# 



六，垃圾邮件限制：
1，enable in /etc/mail/sendmail.mc using
  FEATURE('blacklist_recipients')dnl
  
2, add restrictions in /etc/mail/access
  
  From:[email protected]               REJECT
  Connect:spamRus.net                       REJECT     
  Connect:204.168.23                        REJECT
  Connect:10.3                              OK           
  From:virtualdomain1.com                   RELAY
  to:[email protected]                          ERROR:550 mail discarded
  to:nobody@                                ERROR:550 bad name    
  

七，Sendmail Operation

mail -v user
   view  SMTP  exchange with local relay
   
mailq   and   mailq -Ac
   view   messages queued for future delivery
   
sendmail -q
   reprocess the email queue
   
tail -f /var/log/maillog
   view log in real-time

 

八，安装POP3服务

需要安装QPopper
http://www.eudora.com/products/unsupported/qpopper/index.html
qpopper4.0.8.tar.gz
QPopper的安装配置
QPopper是Unix/Linux环境下的POP3服务器，该软件配合Sendmail使用。其主要功能是实现支持用户通过POP3接收信件。安装和配置Qpopper的主要步骤如下：

1.创建从/usr/mail指向/var/spool/mail/的链接（可以省掉）
[root@email src]# ln -s /var/spool/mail/ /usr/mail

2.解压QPopper软件包
[root@email src]# tar xvfz QPopper4.0.3.tar.gz
[root@email src]# cd QPopper4.0.3

3.编译安装QPopper
[root@email QPopper4.0.3]# ./configure
[root@email QPopper4.0.3]# make
[root@email QPopper4.0.3]# make install

注意：安装时可能需要建立相应个文件夹
# mkdir -p /usr/local/man/man8
*******************
编译需要GCC
yum install gcc (安装GCC)
yum install glibc
yum install pam-devel （编译工具）
yum install pam
yum install inetd (安装inetd)
*******************

编辑/etc/xinetd.d/popper
service pop3
{
disable = no
socket_type = stream
protocol = tcp
wait = no
user = root
server = /usr/local/sbin/popper
server_args = -s
port = 110
}

然后重新启动：
# service xinetd restart

查看端口情况
netstat �Ca （应该看到POP3 SMTP端口正常）

添加用户组：popmail
# groupadd popmail

添加用户
# useradd username -g popmail -s /sbin/nologin
# passwd username