I'm still having this problem and have some more info on it. Firstly it seems to have no relation to attachments.
Whenever I stop, then restart the server I start recieving these errors. Looking in the defered mail queue the first few mailboxes that try and recieve mail seem to lock up. A solution I have found is the re-index the mailboxes in question and flush the queues. The problem will not occur again until I restart the server. Any ideas on what could be causing this? |