I am having issues with Outlook after setting up Office 365/Exchange Online (P Plans) in a 2003 Active Directory Domain. The Server is 2003 Server standard, there was no exchange installed or setup on the server and it was standard POP email (setup in outlook) prior to going to Office 365.
The setup of Outlook completed ok for all users but after the initial sync of the mailbox the following now occurs for all users.
Outlook runs fine when first opening (you can send/receive mail without issue) but after 5min or so the mailbox sync seems to get stuck doing something which in turn stops all sending and receiving of mail, if left it will sometimes complete the sending and receiving of any outstanding mail after 20 to 30min but the only other way to complete it is to exit out of Outlook and re-open Outlook (which it then sends/receives without fail)
At present I have tried the following to resolve the issue:
- Completely removed the Account/Outlook Profile and re-created it
- Disabled all AV services
- Installed all updates
- Ran Outlook in "safe" mode to disable all add-ons
The issue is happening for all users on all PC's which are running both Windows XP and 7 and also different versions of Office inc. 2007/2010/2013
I have also setup an account external to the domain (laptop in a workstation environment) and it works flawlessly
I have not setup any AD synchronisation or federation services as there really is no need to sync with there current AD.
Any help would be appreciated
Because of this I am thinking it is to do with the server/2003 Domain.