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[root@mail ~]# vi /etc/postfix/main.cf
# line 75: uncomment and specify hostname # line 83: uncomment and specify domain name # line 99: uncomment # line 116: change # line 119: change if you use only IPv4 # line 164: add # line 264: uncomment and specify your LAN # line 419: uncomment (use Maildir) home_mailbox = Maildir/
# line 545: uncomment, line 546: add body_checks = regexp:/etc/postfix/body_checks # line 571: add smtpd_banner = $myhostname ESMTP
# add at the last line message_size_limit = 10485760 # limit mailbox 1G mailbox_size_limit = 1073741824
# for SMTP-Auth settings 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@mail ~]# vi /etc/postfix/header_checks # add at the head # reject if email address is empty /^From:.*<#.*@.*>/ REJECT
/^Return-Path:.*<#.*@.*>/ REJECT
[root@mail ~]# vi /etc/postfix/body_checks # reject if includes 'example.com' in mail body [root@mail ~]# systemctl stop sendmail.service [root@mail ~]# systemctl disable sendmail.service [root@mail ~]# 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:
[root@mail ~]# 2 # change to Postfix
systemctl start postfix.service [root@mail ~]# chkconfig postfix on |
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