I upgraded zimbra from 5.0.1 to 5.0.2 yesterday. Since then, the mail queue has been slowly growing with 'Over Quota' messages (I'm up to 17,000) now. I did not have a problem with 'Over Quota' deferred email until after the upgrade.
This asks the following questions:
1. What changed in 5.0.2 to cause all the 'Over Quota' messages to be deferred in the mail queue?
2. How can I configure Zimbra (LMTP listener on port 7025) to issue a '5.x.x' permanent fatal error instead of the '4.x.x' temporary fatal error? I want to configure my system to automatically bounce all 'Over Quota' emails. Is there a better way to do this?