Greetings ... Please read before saying "No, Samba does not work with M$-Exchange!" I have a client which I have just put a Linux server in for and they are very happy, but now they are needing to link the Outlook2K to their head office groupware stuff using M$-Exchange 5.5. Now we need to setup a trust between my clients office domain and head office domain. My question is, does Samba have enough domain functionality that it will be trusted by a NT4 domain for M$-Exchange 5.5? Maybe I will have to look at Head for this to work, I don't want to have to turf the Linux box for five users so that they can use the head office groupware stuff. Thanks for any advice. Mailed Lee P.S. Great work guys.