Suggest My please. How to implement in Zimbra notify_classes. I set in /opt/zimbra/postfix/conf/main.cf directive notify_classes:
notify_classes = bounce, 2bounce, delay, policy, protocol, resource, software
zmcontrol stop and zmcontrol start
Now, theoretically, all the error messages, including Undelivered Mail Returned to Sender must send postmaster too. But this does not happen)
What could be the problem?