1、修改hosts及hostname名称，再重启Linux
[root@mail ~] vim/etc/hosts
[root@mail ~] 127.0.0.1 mail.huhunet.com mx
[root@mail ~] vim/etc/sysconfig/network
[root@mail ~] HOSTNAME=mail.huhunet.com
[root@mail ~] reboot
2、下载iRedMail，并安装及重启Linux
[root@mail ~]# wgethttps://bitbucket.org/zhb/iredmail/downloads/iRedMail-0.9.2.tar.bz2
[root@mail ~]# tar xf iRedMail-0.9.2.tar.bz2
[root@mail ~]# cd iRedMail-0.9.2
[root@mail iRedMail-0.9.2]# bash iRedMail.sh
[root@mail ~] reboot
3、修改amavisd的密钥长度为1024
[root@mail ~]# service amavisd stop
[root@mail ~]# rm -rf /var/lib/dkim/huhunet.com.pem
[root@mail ~]# amavisd -c /etc/amavisd/amavisd.conf genrsa /var/lib/dkim/huhunet.com.pem 1024
[root@mail ~]# service amavisd start
[root@mail ~]# amavisd -c /etc/amavisd/amavisd.conf showkeys
; key#1, domain huhunet.com, /var/lib/dkim/huhunet.com.pem
dkim._domainkey.huhunet.com. 3600 TXT (
"v=DKIM1; p="
"MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDHTzUcLMRdBiGtt/f1bRmQu6fR"
"HAZZ9XY16uGmq+pe10eyxpBlERmJ1+DybmyaFDsHB4JscuYIhIvXbojlsg14P+RC"
"Crvc/xjVbc0G6RPqqnywEKCb/mQR+NiUKex7SSzsRufE9IXFAPHIg+T9PYVqPzOG"
"WIZbYveJm+/PRvmnMQIDAQAB")
#dkim为：配置域名的txt时，需要使用
v=DKIM1; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDHTzUcLMRdBiGtt/f1bRmQu6fRHAZZ9XY16uGmq+pe10eyxpBlERmJ1+DybmyaFDsHB4JscuYIhIvXbojlsg14P+RCCrvc/xjVbc0G6RPqqnywEKCb/mQR+NiUKex7SSzsRufE9IXFAPHIg+T9PYVqPzOGWIZbYveJm+/PRvmnMQIDAQAB
4、修改postfix并重启postfix
[root@mail ~]# vim /etc/postfix/main.cf
#smtpd_tls_auth_only
[root@mail ~]# service postfix restart
5、对外发邮件时，禁用垃圾扫描、病毒扫描
[root@mail ~]# vim /etc/amavisd/amavisd.conf
#将下面配置，添加到 $policy_bank{'MYUSERS'} 配置里，例如：
$policy_bank{'MYUSERS'} = {
[...此处省略其它配置参数...]
# 不执行垃圾扫描、病毒扫描、邮件头检测
bypass_spam_checks_maps => [1],
bypass_virus_checks_maps => [1],
bypass_header_checks_maps => [1],
# 不检查被禁止的文件名和文件类型
bypass_banned_checks_maps => [1],
}
[root@mail ~]# service amavisd restart
6、配置DNS，参考：
http://www.iredmail.com/docs/setup.dns.html
7、测试邮件服务器
[root@mail ~]# amavisd -c /etc/amavisd/amavisd.conf testkeys
TESTING#1: dkim._domainkey.huhunet.com => pass
#测试SPF、DKIM等是否生效
http://www.mail-tester.com
check-auth@verifier.port25.com
邮件系统，可登录发送邮件
https://mail.huhunet.com/mail/
iRedMail管理后台，可添加邮箱账号
https://mail.huhunet.com/iredadmin/
账号：postmaster@huhunet.com
密码：xxxxxx（安装iRedMail时，设置的密码）
参考文档：
下载链接
http://www.iredmail.com/download.html
国内安装：
http://www.iredmail.com/bbs/topic3079-iredmail-iredmail092.html
官方文档：
http://www.iredmail.com/docs/index.html
http://www.iredmail.com/bbs/forum3-iredmail.html
dkim配置
http://www.iredmail.com/docs/sign.dkim.signature.for.new.domain.html
发送慢原因：
http://www.iredmail.com/bbs/topic2229-iredmail-iredmail.html
