Restricting email to the Internet on a per user AND per domain basis
I’ve had a number of clients ask me whether this was possible, especially the ‘restrict contractors to just certain domains’ part.
This is definitely worthwhile knowledge that you should run through in your Exchange 2010 lab. You do have a lab running Exchange 2010, right? (Not that I’m anyone to talk about it, I have a brand new PowerEdge sitting on the floor of my office waiting to be built right now)
You requested it… and we delivered it in Exchange 2010!
One of the most requested items in exchange 2007 was something like this…
…we have 5-12 external domains that we need to allow some users to send to, but prevent sending to all other domains…
Or like this…
…we need a way to allow everyone to send to the internet but restrict members of 'contract workers group' to just certain domains.
This blog post is meant to show how easy it now is to accomplish this oft heard request in Exchange 2010. Transport rules, introduced with Exchange 2007, provided a lot of new options for administration of mail resulting in even more requests for additional functionality. The rules now have new predicates and actions extending the possibilities of what can be done.
In particular, the predicates for address matching that were previously only available on the Edge role are now available for Hub role as well!
For more information about the new predicate and actions read the whole blog post @ You Had Me At EHLO… : Restricting email to the Internet on a per user AND per domain basis.
