Mavericks mail server stops distributing group email after a few hours of usage
I've been having problems with our Mavericks mail server ever since our upgrade with group mail.
The server will distribute group email for a few hour, then it simply stops working.
No error message, no bounces, and the server keeps the incoming mail in its incoming queue.
Restarting the mail services by either server.app or serveradmin mail stop; serveradmin mail start command like are the only way I can get it to continue to distribute the email. I suspect it has to do with postfix itself hiccuping? But this is a reproducable problem.
Mail filtering is on, score set to 6, 10 mb limit, spamhaus is active.
Looking for tips on how to stablize this service short of setting up cron job to restart the services every few hours.
Mac mini, OS X Mavericks (10.9), OpenLDAP and Server.app user