We have a strange issue that has popped up for us.
We had a few users request a certain email address that they could send from. For example AR@company.com or AP@company.com
We created those emails in exchange 2010 and gave send as permissions to the users that wanted it. However, when they try to send as one of those email addresses, they get an immediate bounce back saying they do not have permissions to send as. However, it works fine in OWA, and if you create a new outlook profile, it works fine, till the next morning. I'm assuming maybe it's a OAB issue since the OAB gets downloaded nightly.
I don't see any errors / issues in the event logs. Not really sure where to go from here.
Anyone have any insight?
Little background: We migrated from exchange 2003 to 2010 about a year ago.
Users are using outlook 2007 or outlook 2010.
Exchange 2010 is installed on a server 2008 standard VM.