系統(tǒng)環(huán)境為 centos7.2 x64 mini

1.首先安裝編譯環(huán)境包

yum?install?nginx?vim?gcc?gcc-c++?openssl?openssl-devel?db4-devel?ntpdate?mysql?mysql-devel?mysql-server?bzip2?php-mysql?cyrus-sasl-md5?perl-GD?perl-DBD-MySQL?perl-GD?perl-CPAN?perl-CGI?perl-CGI-Session?cyrus-sasl-lib?cyrus-sasl-plain?cyrus-sasl?cyrus-sasl-devel?libtool-ltdl-devel?telnet?mail?libicu-devel??-y

?2.開始編譯安裝postfix

????a.創(chuàng)建相關(guān)用戶

yum?remove?postfix?-y
userdel?postfix
groupdel?postdrop
groupadd?-g?2525?postfix
useradd?-g?postfix?-u?2525?-s?/sbin/nologin?-M?postfix
groupadd?-g?2526?postdrop
useradd?-g?postdrop?-u?2526?-s?/sbin/nologin?-M?postdrop

????b.編譯安裝

cd?/usr/local/src/
wget?https://mirror.nju.edu.cn/macports/distfiles/postfix/postfix-3.3.1.tar.gz
tar?-zxvf?postfix-3.3.1.tar.gz
cd?postfix-3.3.1
make?makefiles?'CCARGS=-DHAS_MYSQL?-I/usr/include/mysql?-DUSE_SASL_AUTH?-DUSE_CYRUS_SASL?-I/usr/include/sasl?-DUSE_TLS?'?'AUXLIBS=-L/usr/lib64/mysql?-lmysqlclient?-lz?-lrt?-lm?-L/usr/lib64/sasl2?-lsasl2???-lssl?-lcrypto'
make?&&?make?install

????在make install環(huán)節(jié)的時候會有個交互式的界面，可以自定義一些目錄，根據(jù)自己的需求填寫，本人這里只更改了第二項臨時文件目錄，其他的都選擇了默認目錄：

????

????c. 更改授權(quán)

chown?-R?postfix:postdrop?/var/spool/postfix
chown?-R?postfix:postdrop?/var/lib/postfix/
chown?root?/var/spool/postfix
chown?-R?root?/var/spool/postfix/pid

3. 配置 postfix

vi?/etc/postfix/main.cf

myhostname?=?mail.bt.dvcloud.xin
mydomain?=?mail.bt.dvcloud.xin

myorigin?=?$mydomain

inet_interfaces?=?all
#?推薦ipv4，如果支持ipv6，則可以為all
inet_protocols?=?ipv4

mydestination?=?$myhostname,?localhost.$mydomain,?localhost,?$mydomain

#mynetworks?=?127.0.0.0/8,?10.0.0.0/24

home_mailbox?=?Maildir/

smtpd_banner?=?$myhostname?ESMTP

#?添加到最后
#?規(guī)定郵件最大尺寸為10M
message_size_limit?=?10485760
#?規(guī)定收件箱最大容量為1G
mailbox_size_limit?=?1073741824
#?SMTP認證
smtpd_sasl_type?=?dovecot
smtpd_sasl_path?=?private/auth
smtpd_sasl_auth_enable?=?yes
smtpd_sasl_security_options?=?noanonymous
smtpd_sasl_local_domain?=?$myhostname
smtpd_recipient_restrictions?=?permit_mynetworks,permit_auth_destination,permit_sasl_authenticated,reject

然后需要在/etc/init.d/目錄下提供一個腳本來管理postfix的啟動與停止

vim?/etc/init.d/postfix
#!/bin/bash
#
#?postfix??????Postfix?Mail?Transfer?Agent
#
#?chkconfig:?2345?80?30
#?description:?Postfix?is?a?Mail?Transport?Agent,?which?is?the?program?\
#??????????????that?moves?mail?from?one?machine?to?another.
#?processname:?master
#?pidfile:?/var/spool/postfix/pid/master.pid
#?config:?/etc/postfix/main.cf
#?config:?/etc/postfix/master.cf

#?Source?function?library.
.?/etc/rc.d/init.d/functions

#?Source?networking?configuration.
.?/etc/sysconfig/network

#?Check?that?networking?is?up.
[?$NETWORKING?=?"no"?]?&&?exit?3

[?-x?/usr/sbin/postfix?]?||?exit?4
[?-d?/etc/postfix?]?||?exit?5
[?-d?/var/spool/postfix?]?||?exit?6

RETVAL=0
prog="postfix"

start()?{
?????#?Start?daemons.
?????echo?-n?$"Starting?postfix:?"
????????/usr/bin/newaliases?>/dev/null?2>&1
?????/usr/sbin/postfix?start?2>/dev/null?1>&2?&&?success?||?failure?$"$prog?start"
?????RETVAL=$?
?????[?$RETVAL?-eq?0?]?&&?touch?/var/lock/subsys/postfix
????????echo
?????return?$RETVAL
}

stop()?{
??#?Stop?daemons.
?????echo?-n?$"Shutting?down?postfix:?"
?????/usr/sbin/postfix?stop?2>/dev/null?1>&2?&&?success?||?failure?$"$prog?stop"
?????RETVAL=$?
?????[?$RETVAL?-eq?0?]?&&?rm?-f?/var/lock/subsys/postfix
?????echo
?????return?$RETVAL
}

reload()?{
?????echo?-n?$"Reloading?postfix:?"
?????/usr/sbin/postfix?reload?2>/dev/null?1>&2?&&?success?||?failure?$"$prog?reload"
?????RETVAL=$?
?????echo
?????return?$RETVAL
}

abort()?{
?????/usr/sbin/postfix?abort?2>/dev/null?1>&2?&&?success?||?failure?$"$prog?abort"
?????return?$?
}

flush()?{
?????/usr/sbin/postfix?flush?2>/dev/null?1>&2?&&?success?||?failure?$"$prog?flush"
?????return?$?
}

check()?{
?????/usr/sbin/postfix?check?2>/dev/null?1>&2?&&?success?||?failure?$"$prog?check"
?????return?$?
}

restart()?{
?????stop
?????start
}

#?See?how?we?were?called.
case?"$1"?in
??start)
?????start
?????;;
??stop)
?????stop
?????;;
??restart)
?????stop
?????start
?????;;
??reload)
?????reload
?????;;
??abort)
?????abort
?????;;
??flush)
?????flush
?????;;
??check)
?????check
?????;;
??status)
???????status?master
?????;;
??condrestart)
?????[?-f?/var/lock/subsys/postfix?]?&&?restart?||?:
?????;;
??*)
?????echo?$"Usage:?$0?{start|stop|restart|reload|abort|flush|check|status|condrestart}"
?????exit?1
esac

exit?$?

設(shè)置該腳本權(quán)限

chmod?+x?/etc/init.d/postfix
chkconfig?--add?postfix
chkconfig?postfix?on
chown?postfix.postfix?-R?/var/lib/postfix/
chown?postfix.postfix?/var/spool/?-R

4.安裝Dovecot

yum?-y?install?dovecot

配置Dovecot

vi?/etc/dovecot/dovecot.conf

#??如果不使用IPv6，請修改為*
listen?=?*

vi?/etc/dovecot/conf.d/10-auth.conf

disable_plaintext_auth?=?no
auth_mechanisms?=?plain?login

vi?/etc/dovecot/conf.d/10-mail.conf

mail_location?=?maildir:~/Maildir

vi?/etc/dovecot/conf.d/10-master.conf

#?Postfix?smtp驗證
unix_listener?/var/spool/postfix/private/auth?{
????mode?=?0666
????user?=?postfix
????group?=?postfix
}

然后啟動服務(wù)

/etc/init.d/postfix?start
systemctl?start?dovecot

測試：就可以使用Foxmail等第三方軟件來收發(fā)郵件了。

系統(tǒng)用戶就是郵件的用戶，例如root，就是一個郵箱用戶，郵箱是root@domain.com，密碼就是root的密碼，所以需要創(chuàng)建用戶，只要使用useradd創(chuàng)建用戶，再使用passwd設(shè)置密碼。

好了，假如我們創(chuàng)建一個admin的用戶：

#?創(chuàng)建用戶
useradd?nineven
#設(shè)置密碼，會要求輸入兩次密碼
passwd?nineven

第二章，配置SSL

??

????1.創(chuàng)建自定義的ssl證書

cd?/etc/pki/tls/certs
make?server.key
umask?77?&&?/usr/bin/openssl?genrsa?-aes128?2048?>?server.key
openssl?rsa?-in?server.key?-out?server.key
make?server.csr
umask?77?&&?/usr/bin/openssl?req?-utf8?-new?-key?server.key?-out?server.csr
chmod?400?server.*

2.配置

vi?/etc/postfix/main.cf

#?添加到最后
smtpd_use_tls?=?yes
smtpd_tls_cert_file?=?/etc/pki/tls/certs/server.crt
smtpd_tls_key_file?=?/etc/pki/tls/certs/server.key
smtp_tls_session_cache_database?=?btree:${data_directory}/smtp_scache
smtpd_tls_session_cache_database?=?btree:${data_directory}/smtpd_scache
smtpd_tls_loglevel?=?0
smtpd_tls_auth_only?=?yes

vi?/etc/postfix/master.cf

smtps???????inet???n???????-???????n???????-???????-???????smtpd
??-o?smtpd_tls_wrappermode=yes

vi?/etc/dovecot/conf.d/10-ssl.conf

ssl?=?yes
#?指定證書
ssl_cert?=?</etc/pki/tls/certs/server.crt
ssl_key?=?</etc/pki/tls/certs/server.key

然后重新啟動服務(wù)

/etc/init.d/postfix?restart
systemctl?restart?dovecot

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