Our users have mutliple SMTP addresses in Exchange. We set one as their default reply-to.
From Outlook (for e.g., I'm using 2010 64 bit in Windows 7), in the e-mail compose window, there's a dropdown with all the user's SMTP addresses:
However, when I chose one that is not my default reply-to address, I get an error like the following:
Delivery has failed to these recipients or groups:
Recipient's name 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 don't understand. That's one of my SMTP addresses so why wouldn't I be able to send as it?
What would we have to do to allow allow all users to be able to send from any of their SMTP addresses?