debian postfix dovecot
Contents
debian postfix dovecot
install postfix
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internet site, wiloon.com; sudo dpkg-reconfigure postfix 4. 编辑main.cf
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在mydestination后加上wiloon.com，成为这个样子:
myhostname
myhostname 参数指定运行postfix邮件系统的主机的主机名。缺省地，该值被设定为本地机器名。你也可以指定该值，需要注意的是，要指定完整的主机名。如:
myhostname = mail.wiloon.com
用下面的命令测试,其实就是测试25端口是否打开
telnet localhost 25 Postfix将在终端中显示如下提示，这样你就可以用来键入SMTP命令. Trying 127.0.0.1… Connected to mail.fossedu.org. Escape character is ‘^]'. 220 localhost.localdomain ESMTP Postfix (Ubuntu) 用下面的命令测试postfix
ehlo localhost mail from: root@localhost rcpt to:user1@localhost data Subject: My first mail on Postfix Hi, Are you there? regards, Admin . (Type the .[dot] in a new Line and press Enter )
quit 检查刚才创建的fmaster用户的收件箱
su - user1
cd /home/user1/Maildir/new
try to send email from gmail to user1@wiloon.com
dovecot
安装POP3和IMAP支持
sudo apt-get install dovecot-imapd dovecot-pop3d
dovecot配置
vi /etc/dovecot/dovecot.conf
uncomment on this line:
protocols = imap pop3 listen = *
配置认证方式
vi /etc/dovecot/conf.d/10-auth.conf
change on these line:
disable_plaintext_auth = no auth_mechanisms = plain login
设置邮箱文件夹
vi /etc/dovecot/conf.d/10-mail.conf
mail_location = maildir:~/Maildir
配置认证
vi /etc/dovecot/conf.d/10-master.conf
commented on these line:
#unix_listener auth-userdb { #mode = 0600 #user = #group = #}
change or setup on these line:
Postfix smtp-auth
unix_listener /var/spool/postfix/private/auth { mode = 0666 user = postfix group = postfix }
配置pop3
vi /etc/dovecot/conf.d/20-pop3.conf
uncomment on these line:
pop3_uidl_format = %08Xu%08Xv pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
重启dovecot
/etc/init.d/dovecot restart
大功告成！
使用telnet检测110(POP3)和143(IMAP)端口
telnet 127.0.0.1 110
Trying 127.0.0.1...
Connected to mail.centos.bz (127.0.0.1).
Escape character is '^]'.
+OK Dovecot ready.
quit
+OK Logging out
Connection closed by foreign host.
telnet 127.0.0.1 143
Trying 127.0.0.1...
Connected to mail.centos.bz (127.0.0.1).
Escape character is '^]'.
* OK Dovecot ready.
9、给postfix加上如下配置
smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth smtpd_sasl_auth_enable = yes smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, permit broken_sasl_auth_clients = yes
################————————————
#默认情况下，dovecot是不允许plaintext类型的认证的，打开
重启postfix和dovecot。至此，postfix可以收信，并且foxmail可以pop3取信。测试。
到现在foxmail还不能连接到postfix发信，原因是postfix不进行open relay，OR可不能打开，太危险了。
两种解决方案:
a、在mail.cf里的mynetworks字段加上foxmail所在的网段。默认情况下mynetworks字段只有127.0.0.0/8，所以你telnet mail.example.com 25 后，是可以发信的。如果你确定foxmail所在的网段，加上即可。
b、很多情况下发信客户ip是不能确定的，所以打开sasl认证。
接下来配置sasl认证
- 编辑dovecot.conf
在mechanisms字段加上login，成为这个样子:
mechanisms = plain login
编辑socket listen字段，成为这个样子:
引用:
socket listen {
client {
path = /var/spool/postfix/private/auth-client
mode = 0660
user = postfix
group = postfix
}
}
- 给postfix加上如下配置
smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth smtpd_sasl_auth_enable = yes smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, permit broken_sasl_auth_clients = yes
- 重起postfix (sudo service postfix restart) 和dovecot (sudo service dovecot restart) 。不出意外的话，已经可以通过foxmail正常收发邮件了
注:
这样的配置对认证过程不加密，如果害怕密码被监听，就进一步加上ssl好了。
如果被hotmail等退信的话。大部分情况下有两种可能: a、没有PTR记录，找你的ISP做。b、你的IP属于垃圾邮件监控地址(俗称上榜，呵呵)，去查查看。比如www.spamhaus.org(hotmail就是用这个的)，如果属于pbl，申请取消就好了，如果sbl这些，那就只能找你的ISP解决了。gmail则比较奇怪。如果gmail退信的话，试着改一下mail.cf中mydestination的顺序，把localhost改到前面。改成这个样子:
“mydestination = localhost, localhost.example.com, mail.example.com, example.com”
很多人就这样把问题解决了，但似乎谁都不知道原理
http://goahead2010.iteye.com/blog/1911165
https://help.ubuntu.com/community/PostfixBasicSetupHowto
http://yubosun.akcms.com/tech/postfix-dovecot-smtp.htm
Author -
LastMod 2013-05-12