When logging into OWA, a user who writes and sends an email will have that email end up in the Drafts folder and never be sent. I have replicated this issue myself so no user error here. Items in the drafts folder stay in even after (supposed) deletion.
When logging into Exchange over Outlook Anywhere with the same account, the user can send and receive mail without issue. However the Drafts folder is empty.
I've checked available space on the Exchange server and have over 100gb free on the drive Exchange is installed, so this is not a Back pressure issue.
I've seen several post online about this but none that I could find lead to an answer. Anyone have a guess?