In a nutshell the issue is a permissions issue but it is unclear to me where the problem exist. This is the second time that this has happened and I know how to 'repair' the problem but no idea on a real fix.
Windows 2003 server R2, Exchange 2007, Outlook 2007, Windows 7 desktop - all up to date on patches etc.
My Outlook account can no longer connect to the Exchange server. OWA and my mobile phone also loose the ability to connect to the Exchange server. The main errors that show up in the Exchange event viewer are 1016 and 1022.
They talk about a mapi faliure due to the login. In researching the errors, it narrowed down to the permissions set on my AD account. Under my account/Security/Advanced, I found that my "include inheritable permissions from this object's parent" is unchecked. I go through the steps to check that box, save it etc to find that it is unchecked about 20 minutes later! When it is checked it does not solve the problem right away but last time I talked with MS, that was the root of the issue. Although they had me pretty much delete my Exchange account and recreate it to get my e-mail working again. That fixed lasted almost 3 weeks to the day.
Needless to say, they also thought it was a group policy problem that was causing the problem but I have moved my account to it's own OU and the problem still exist. I am running a Windows 7 machine along with others but the problem exist only with my account. The backup domain adminstrator who has the same permissions etc doesn't have this problem... any ideas?