Hello,
I have very strange problem! 2 users complain that the outlook hangs every day, approximately at the same time. But other 200 users work fine. I can't see any error on the mail servers ( two servers exchange 2010 sp 3 with dag) Outlook can hangs for 15 min with user, who has mailbox 1,5 Gb and about 3-5 min with user, who has mailbox 150 Mb.
When outlook hangs, owa logon also hangs and then they start working simultaneously.
It doesn't depend on the server where I try to run owa. I tried to move mailbox to new database, but it didn't resolve my problem.
There are no any scheduled tasks on exchange servers at this time. No performans issues. Maybe some problems of connectivity with AD, but I don't see any suspicious event.