We have SBS 2008 running Exchange 2007. Our clients are running Outlook 2007.
For one user there are items in the Outbox that are not sending, they're just sitting there. If I try to delete them, nothing happens. No error message. I have full control over the mailbox (thus why I'm able to see it) so I should be able to delete them.
On the server-side, no errors appear in Event Viewer and we've been sending/receive other emails no problem all day/night.
Any idea what would cause this? Thanks in advance.