/etc/rc.d/sendmail stop pkg install postfix ln -s /usr/local/etc/rc.d/postfix /etc/rc.d/postfix sysrc postfix_enable="YES" sysrc sendmail_enable="NONE" mv -i /etc/mail/mailer.conf /etc/mail/mailer.conf.dist cp -pi /usr/local/share/postfix/mailer.conf.postfix /etc/mail/mailer.conf vi /etc/periodic.conf daily_clean_hoststat_enable="NO" daily_status_mail_rejects_enable="NO" daily_status_include_submit_mailq="NO" daily_submit_queuerun="NO" /etc/rc.d/postfix start
you can now proceed with postfix setup, where you will also need
pkg install procmail pkg install dehydrated pkg install postfix-policyd-spf-perl ln -s /etc/mail /usr/local/etc/mail pkg install opendkim /usr/local/sbin/unbound-anchor ls -lhF /usr/local/etc/unbound/root.key echo milteropendkim_enable="YES" >> /etc/rc.conf ln -s /usr/local/etc/rc.d/milter-opendkim /etc/rc.d/milter-opendkim
few more things
pkg install alpine