I have a situation where management has requested a user be setup with a mailbox that is prohibited from sending or receiving mail outside of our company. I’ve created two different transport rules as follows. Environment: Exchange 2007 SP1 RU7
Block Receiving External Apply rule to messages from users Outside the organization and sent to <useraddress> send Delivery not authorized, message refused to sender with 5.7.1 Block Sending External Apply rule to messages from <useraddress> and sent to users Outside the organization send Delivery not authorized, message refused to sender with 5.7.1 This setup works great except for when our Help Desk tracking system sends automated messages based on ticket creation, updates, and closures. Even though the tracking system is “inside” the organization, and the emails always appear to be coming from *...@ourdomain.com, the automated messages are being bounced back. I know that I need to use the exceptions portion of the rule to try to allow these through but am hitting a wall. The tricky part to this is that the From, Subject, and Body fields are never consistent so many of the exceptions in the rules are not working. Thoughts? Suggestions? Can I create an exception based off IP address of the Help Desk server? If so, how to I add that to my transport rules?
