We are running Exchange 2003 SP2.
We have a peculiar issue where some emails from internal users to other internal users are being directed to the recipients' Outlook Junk Mail folder.
The mails are sent and recieved via Outlook 2003 and 2007. I was under the impression that internal mails could not be classified as Junk Mail.
This even occurs when a user sends an email to someone else on the same Exchange server.
Any idea on how to find the cause and fix this?