详解Linux下的postfix安装
Ok，之上都已经完全安装了，下面就开始安装postfix
增加用户名
[root@server250 ~]# groupadd -g 503 postfix
[root@server250 ~]# useradd -g postfix -u 503 postfix
[root@server250 ~]#
[root@server250 ~]# groupadd -g 504 postdrop
[root@server250 ~]# useradd -g postdrop -u 504 -s /sbin/nologin -M postdrop
[root@server250 postfix]# tar zxvf postfix-2.8.7.tar.gz
root@localhost postfix-2.8.7]# make makefiles 'CCARGS=-DHAS_MYSQL -I/usr/local/mysql/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/local/sasl2/include/sasl -DUSE_TLS -I/usr/local/ssl/include/openssl ' 'AUXLIBS=-L/usr/local/mysql/lib -lmysqlclient -lz -lm -L/usr/local/sasl2/lib -lsasl2 -L/usr/local/ssl/lib -lssl -lcrypto'
daemon_directory: [/usr/libexec/postfix] /usr/local/postfix/libexec
data_directory: [/var/lib/postfix] /usr/local/postfix/lib
html_directory: [no] /var/www/postfix_html
manpage_directory: [/usr/local/man] /usr/local/postfix/man
修改配置文件
/etc/postfix/main.cf
[root@server250 ~]# /usr/sbin/postfix start
postfix/postfix-script: starting the Postfix mail system
[root@server250 postfix-2.8.7]# netstat -anpt | grep 25
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 3455/master
修改防火墙的配置文件，添加25端口
[root@server250 ~]# vi /etc/sysconfig/iptables
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 25 -j ACCEPT
重启防火墙
接下来是验证postfix是否安装成功
[root@server250 ~]# telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
220 mail.ku888.in ESMTP Postfix
ehlo mail.ku888.in
250-mail.ku888.in
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
mail from:root@ku888.in
250 2.1.0 Ok
rcpt to:frank@ku888.in
250 2.1.5 Ok
data
354 End data with .
subject:test!!
test!!!!!!!!!!
.
250 2.0.0 Ok: queued as 048B45CF00A3
quit
221 2.0.0 Bye
Connection closed by foreign host.
第八，配置postfix的虚拟用户邮箱
验证ok后，下面开始部署安装postfix的虚拟用户和邮箱设置
先确认下你的postfix是否支持 cyrus-sasl的认证
[root@mail2 ~]# postconf -a
cyrus
Dovecot
Ok，支持的
下面进行设置
[root@mail2 ~]# vi /etc/postfix/main.cf
编辑她的配置文件
在末尾处添加
############################CYRUS-SASL############################
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions=permit_mynetworks,permit_sasl_authenticated,reject_invalid_hostname,reject_non_fqdn_hostname,reject_unknown_sender_domain,reject_non_fqdn_sender,reject_non_fqdn_recipient,reject_unknown_recipient_domain,reject_unauth_pipelining,reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = $myhostname
smtpd_sasl_security_options = noanonymous
smtpd_sasl_application_name = smtpd
smtpd_banner = Welcome to our $myhostname ESMTP,Warning: Version not Available!
############################END-CYRUS-SASL############################
在sasl2的库文件中，添加认证
[root@mail2 sasl2]# vi smtpd.conf
pwcheck_method: saslauthd
mech_list: PLAIN LOGIN
~
重新加载postfix的配置文件，
重新telnet ，验证下是否有加载上SASL认证
[root@mail2 ~]# telnet localhost 25
Trying 127.0.0.1...
Connected to mail2.51coolbar.com (127.0.0.1).
Escape character is '^]'.
220 Welcome to our mail2.51coolbar.com ESMTP,Warning: Version not Available!
ehlo localhost
250-mail2.51coolbar.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-AUTH PLAIN LOGIN 确保这两行的输出，否则都是有问题的
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
Ok，发现是加载上了
配置虚拟用户和虚拟域
编辑postfix的主配置文件
########################Virtual Mailbox Settings####################
virtual_mailbox_base = /var/mailbox/
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_alias_domains =
virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf
virtual_uid_maps = static:509
virtual_gid_maps = static:513
virtual_transport = virtual
maildrop_destination_recipient_limit = 1
maildrop_destination_concurrency_limit = 1
##########################QUOTA Settings########################
message_size_limit = 14336000
virtual_mailbox_limit = 20971520
virtual_create_maildirsize = yes
