For some reason it appears as though I am not receiving all my mail.
I have mail forwarded from an outside server to our inside zimbra server. I have used it like this since version 5.x After installing 7.1.1 on my ubuntu 10.4 server we are seeing mail just vanish. I turned of spam filtering to see if that was the issue.
One thing I see is, I have a local account on the server, that is I log on with my username, so if I send mail to myusername@mailserver.domain.com the mail will go sometimes to my local (system account not zimbra) or to zimbra, users that do not, which is everyone else, the mail bounces back stating:
mail for zmail5.domain.com loops back to myself)