Exchange 2010 and SendAs problems
We setup our own Exchange Server as part of a complete server refresh a few months ago, and now it is hit and miss whether the SendAs works or not.
I have a Helpdesk mailbox that I SendAs when I need to send anything out, if you add the email address in to my Outlook and go to send a email, it comes back with "You can't send a message on behalf of this user unless you have permission to do so. Please make sure you're sending on behalf of the correct sender, or request the necessary permission. If the problem continues, please contact your helpdesk."
I have tried removing the rights, I have tried leaving it 24 hours, It sometimes works if I remove the email address from my Outlook "From" field and retype it.
It has been working for about a week, but when I tried to sort out someone elses SendAs for the accounts it stopped mine (presumably when I restarted the Information Store service). I have noticed that I am currently running native SP2 and not any additional RollUps. Could this affect it?