Originally Posted by sems
We had sending issues, related to domain admins, see:
The fix on 912918, assigning Send As priv to OU helped with most stuff, but Domain Admins' priv was being overwritten.
Yes this was the cause of the problems, however it threw me off, because, the bes service pack was appllied 2 weeks before, the exchange server had windows updates and was rebooted, THEN, the issues started happening.
Also, I had a problem with one of the DLL files were wrong so it wasnt activating properly, I just backed up the database, and did a clean installe 4.0.4. with hf3 relinked the DB and it was all good.