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Install/Configure Postfix
2010/11/07 |
| Install Postfix to configure SMTP Server. This example shows to configure SMTP-Auth to use Dovecot's SASL function.
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| [1] | Install and Configure Postfix |
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[root@mail03 ~]# yum -y install postfix [root@mail03 ~]# vi /etc/postfix/main.cf # line 75: uncomment and specify hostname myhostname = mail03.srv.world # line 83: uncomment and specify domain name mydomain = srv.world # line 99: uncomment myorigin = $mydomain # line 116: change inet_interfaces = all # line 164: add mydestination = $myhostname, localhost.$mydomain, localhost , $mydomain # line 264: uncomment and specify your LAN mynetworks = 127.0.0.0/8, 10.0.0.0/24 # line 419: uncomment (use Maildir) home_mailbox = Maildir/ # line 545: uncomment, line 546: add header_checks = regexp:/etc/postfix/header_checks body_checks = regexp:/etc/postfix/body_checks # line 571: add smtpd_banner = $myhostname ESMTP # add at the last line # limit an email size 10M message_size_limit = 10485760 # limit mailbox 1G mailbox_size_limit = 1073741824 # for SMTP-Auth settings 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_client_restrictions = permit_mynetworks,reject_unknown_client,permit smtpd_recipient_restrictions = permit_mynetworks,permit_auth_destination,permit_sasl_authenticated,reject [root@mail03 ~]# vi /etc/postfix/header_checks # add at the head # reject if email address is empty /^From:.*<#.*@.*>/ REJECT /^Return-Path:.*<#.*@.*>/ REJECT [root@mail03 ~]# vi /etc/postfix/body_checks # reject if includes 'example.com' in mail body /^(|[^>].*)example.com/ REJECT [root@mail03 ~]# /etc/rc.d/init.d/sendmail stop Shutting down sm-client: [ OK ] Shutting down sendmail: [ OK ] [root@mail03 ~]# chkconfig sendmail off [root@mail03 ~]# alternatives --config mta # change default MTA There are 2 programs which provide 'mta'. Selection Command ----------------------------------------------- *+ 1 /usr/sbin/sendmail.sendmail 2 /usr/sbin/sendmail.postfix Enter to keep the current selection[+], or type selection number: 2 # switch to postfix [root@mail03 ~]# /etc/rc.d/init.d/postfix start Starting postfix: [ OK ] [root@mail03 ~]# chkconfig postfix on |