二、配置邮件服务器.
本节主要讲述各种服务的参数配置。
A、配置rc.conf，编辑/etc/rc.conf
下面是前面所装软件都加入启动选项的rc.conf配置
courier_authdaemond_enable=”YES”
courier_imap_pop3d_enable=”YES”
courier_imap_imapd_enable=”YES”
sendmail_enable=”YES”
sendmail_flags=”-bd”
sendmail_pidfile=”/var/spool/postfix/pid/master.pid”
sendmail_procname=”/usr/local/libexec/postfix/master”
sendmail_outbound_enable=”NO”
sendmail_submit_enable=”NO”
sendmail_msp_queue_enable=”NO”
b、配置postfix 和 cyrus-sasl
1、修改/usr/local/etc/postfix/main.cf，在文件最后加入以下内容.
# vi /usr/local/etc/postfix/main.cf
smtpd_helo_required = yes
strict_rfc821_envelopes = yes
smtpd_etrn_restrictions = permit_mynetworks, reject
#=====================BASE=====================
myhostname = ns1.ding9.com
mydomain = ding9.com
mydestination = $myhostname
local_recipient_maps =
command_directory = /usr/local/sbin
local_transport = virtual
#=====================MySQL=====================
virtual_alias_maps = mysql:/usr/local/etc/postfix/mysql_virtual_alias_maps.cf
virtual_gid_maps = static:125
virtual_mailbox_base = /
virtual_mailbox_domains = mysql:/usr/local/etc/postfix/mysql_virtual_domains_maps.cf
virtual_mailbox_limit = 51200000
virtual_mailbox_maps = mysql:/usr/local/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_minimum_uid = 125
virtual_transport = virtual
virtual_uid_maps = static:125
#=====================Quota=====================
virtual_create_maildirsize = yes
virtual_mailbox_extended = yes
virtual_mailbox_limit_maps = mysql:/usr/local/etc/postfix/mysql_virtual_mailbox_limit_maps.cf
virtual_mailbox_limit_override = yes
virtual_maildir_limit_message = Sorry, the user’s maildir has overdrawn his diskspace quota, please try again later.
virtual_overquota_bounce = yes
#====================SASL=====================
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes
smtpd_delay_reject=yes
smtpd_recipient_restrictions = permit_mynetworks,permit_sasl_authenticated,permit_auth_destination,reject
smtpd_client_restrictions = permit_sasl_authenticated
注：mail.toping.net 在这里是指unix服务器的hostname ，这个可以根据unix的实际的hostname来作相应修改，这里暂时以mail.toping.net 这个hostname来说明。
2、确认/usr/local/etc/postfix/master.cf的配置有如下内容:
virtual unix – n n – – virtual
3、编辑/usr/local/etc/postfix/mysql_virtual_alias_maps.cf
# vi /usr/local/etc/postfix/mysql_virtual_alias_maps.cf
加入以下内容：
user = postfix
password = postfix
hosts = localhost
dbname = postfix
query = SELECT alias FROM userinfo WHERE address=’%s’ AND active = 1
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