SMTP server
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Install Postfix to configure SMTP server. SMTP uses 25/TCP.
[root@mail ~]# yum -y install postfix
This example shows to configure SMTP-Auth to use Dovecot's SASL function.
[root@mail ~]# vi /etc/postfix/main.cf
# line 75: uncomment and specify the hostname
myhostname = mail.worldcm.net
# line 83: uncomment and specify the domain name
mydomain = mail.worldcm.net
# line 99: uncomment
myorigin = $mydomain
# line 116: change
inet_interfaces = all
# line 119: change if you use only IPv4
inet_protocols = ipv4
# line 164: add
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
# line 264: uncomment and specify your local network
mynetworks = 127.0.0.0/8, 10.0.0.0/24
# line 419: uncomment (use Maildir)
home_mailbox = Maildir/
# line 571: add
smtpd_banner = $myhostname ESMTP
# add follows to the end
# limit an email size for 10M
message_size_limit = 10485760
# limit a mailbox for 1G
mailbox_size_limit = 1073741824
# for SMTP-Auth
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
[root@mail ~]# /etc/rc.d/init.d/postfix start
Starting postfix: [ OK ]
[root@mail ~]# chkconfig postfix on
Install Dovecot2014/08/22
Install Dovecot to configure POP/IMAP server. POP uses 110/TCP, IMAP uses 143/TCP.
[1] Install Dovecot.
[root@mail ~]# yum -y install dovecot
[2] This example shows to configure to provide SASL function to Postfix.
[root@mail ~]# vi /etc/dovecot/dovecot.conf
# line 26: change ( if not use IPv6 )
listen = *
[root@mail ~]# vi /etc/dovecot/conf.d/10-auth.conf
# line 9: uncomment and change ( allow plain text auth )
disable_plaintext_auth = no
# line 97: add
auth_mechanisms = plain login
[root@mail ~]# vi /etc/dovecot/conf.d/10-mail.conf
# line 30: uncomment and add
mail_location = maildir:~/Maildir
[root@mail ~]# vi /etc/dovecot/conf.d/10-master.conf
# line 88-90: uncomment and add
# Postfix smtp-auth
unix_listener /var/spool/postfix/private/auth {
mode = 0666
user = postfix
group = postfix
}
[root@mail ~]# /etc/rc.d/init.d/dovecot start
Starting Dovecot Imap: [ OK ]
[root@mail ~]# chkconfig dovecot on
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