Exchange.
> > Regular Inbox with Folders underneath it.
>
> That's not an account type. Your account is Exchange, POP, IMAP, or HTTP.
> Which?
> Exchange.
While I've seen multiple reports about this with Exchange mailboxes and
while I can think of several things that might cause it, I don't have a
definitive answer. It's because of something happening on the Exchange
server, though, so were I you, I'd be speaking to the Exchange admins.

Signature
Brian Tillman [MVP-Outlook]
ChristyL - 13 May 2008 17:04 GMT
Thank you for all attempts. I did talk to them, but they weren't much help
either to pinpoint what happened.
> > Exchange.
>
> While I've seen multiple reports about this with Exchange mailboxes and
> while I can think of several things that might cause it, I don't have a
> definitive answer. It's because of something happening on the Exchange
> server, though, so were I you, I'd be speaking to the Exchange admins.