REQUIREMENTS 1. Remove exim. Postfix and exim can NOT coexist. 2. Group "postdrop" MUST exist and MUST be empty. PRE-INSTALL pkgrm exim groupadd postdrop NOTICE: If upgrading from 1.x.x / 2.0 / 2.1 series: STOP postfix before update. AFTER upgrading from an older release DO NOT copy the old master.cf/main.cf files over the new files. Instead, you MUST let the Postfix installation procedure update the existing configuration files with new service entries. Please consult postfix release notes on Postfix website for further update details. POST-INSTALL cd /etc/postfix sh post-install \ manpage_directory=/usr/share/man \ command_directory=/usr/sbin \ config_directory=/etc/postfix \ setgid_group=postdrop \ mail_owner=mail \ upgrade-package sh post-install \ command_directory=/usr/sbin \ config_directory=/etc/postfix \ setgid_group=postdrop \ mail_owner=mail \ create-missing Rebuild hash maps: /usr/sbin/postalias /etc/postfix/aliases /usr/sbin/postmap hash:/etc/postfix/{virtual,relocated,access,transport} MISCELLANEOUS The packager of this port (Victor) also supplied an example configuration and some notes. I've separated them from this port. You can get them here: http://hometux.de/crux/postfix_victor.tar.gz