Forum Discussion
Users with full access to someone else's mailbox can no longer send emails
Hi, It used to work great but it stopped working a couple of weeks ago for no apparent reason? Now even when we grant full access to someone's mailbox they can't reply or send any email from that...
Full access to a mailbox doesn't let the permission holder to send from that mailbox. Send As or Send on Behalf permission needs to be granted explicitly. In your case that permission could have been revoked, so you have to grant it again.