So I decide to do Windows updates on Small Business Server 2008, including a roll up for Exchange.
Previous Roll ups have been installed no problem.
I installed rollup 15, as recommended by Windows update.
After the updates are done, I email a couple accounts and I get the exact same error:
OK rejected your message to the following email addresses:
OK gave this error:
A problem occurred while delivering this message to this email address. Try sending this message again. If the problem continues, please contact your helpdesk.
Diagnostic information for administrators:
Generating server: Lisa.mycompany.ca
OK #550 No description ##
Original message headers:
So I can send out with no problems.
DNS for the mail record is fine and our External IP has not changed.
I tried sending to other accounts and from my Yahoo address and there is no change.
Spam filter is Exchange an is on and SCL is set to 5, but I don't think it's making it that far. Since the email is bouncing back and not be forwarded to the Spam catch all account on the Small Business Server.
So I went into the Server and uninstalled the roll up , but it still does the exact same thing (left all other updates in for now).
Any suggestions would be helpful, as this is a production server.