Create new "/etc/postgrey/whitelist_recipients.local". Edit it to add the one added "slack@craigbuchek.com" line from "/etc/postfix/postgrey_whitelist_recipients" copied from amber. Delete "/etc/postfix/postgrey_whitelist_recipients" copied from amber. Use /etc/postgrey/whitelist_recipients installed by default, don't change.
Use "/etc/postgrey/whitelist_clients" installed by default, don't change. Delete "/etc/postfix/postgrey_whitelist_clients" copied from amber which was not changed from default on amber.
Rename "/etc/postfix/postgrey_whitelist_clients.local" copied from amber to "/etc/postgrey/whitelist_clients.local". Edit this to delete or comment all SLUUG servers no longer operating.
Edit /etc/default/postgrey to add to the POSTGREY_OPTS variable:
--inet=127.0.0.1:10023 Replaces --inet=10023
--delay=240
--auto-whitelist-clients=4
--max-age=95
Restart the postgrey daemon:
systemctl stop postgrey systemctl status postgrey systemctl start postgrey systemctl status postgrey
Check logs "/var/log/daemon.log" and "/var/log/mail.info". netstat –all –numeric –numeric-ports | egrep 'Address|10023' ps -ef | egrep 'PID|postgrey'
Edit "/etc/postfix/main.cf". Check port in main.cf should now be port 10023 and not 60000. The test to be added to "smtpd_recipient_restrictions" is "check_policy_service inet:127.0.0.1:10023,". An example is:
smtpd_recipient_restrictions =
permit_mynetworks,
reject_unauth_destination,
check_policy_service inet:127.0.0.1:10023
Reload the postfix daemon:
systemctl reload postgrey systemctl status postgrey
Check log "/var/log/mail.info".
Test sending mail from an external system.
Continue to monitor "/var/log/mail.info".
Files and directories of interest:
Search finds comments that postgrey doesn't support systemd, and systemd is using "a shim" to just run the init script.
When stopping, expect to see errors logged about Couldn't unlink "/var/run/postgrey.pid". However, it is properly created when started and deleted when stopped.