Exim not playing nice with Exchange servers

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http://www.linuxquestions.org – Ok this is kind of a weird problem. I have a home server running exim and it hosts a few different domains on it. When I email most other email servers other than Exchange servers it works as it should. When I send to an exchange server though from one of my virtual hosted domains it doesn't show the proper from address. It shows the user@ full fqdn like this: fakeuser@deimos.crash-override.org [mailto:fakeuser@deimos.crash-override.org] On Behalf Of Fake Name On my email client my email is fakeuser@cgee.net, which is hosted on the box at deimos.crash-override.org but Exchange servers ju (HowTos)