First - forgive the length of this post...I am going to throw this out there for whomever wants to respond. I have an Exchange 5.5 server which is my PDC (primary authentication and email - internal only) running on server 2000. Last year it crashed because it mysteriously forgot that it was the PDC and I had to rebuild it from scratch. Now, I am having serious issues with Exchange mail and am getting tired of it. I am required to offer calendaring, shared contacts, yadda, yadda, yadda. I have looked at SuSE's offering and have also looked into a product called bynari. Both seem to offer the right stuff - at a hefty price - comparable to M$. I don't mind the price but I want to be sure that in another year I am not back in the same position with problem on a different platform. I don't have anyone on staff that can set up Sendmail and I don't have the time to learn it. I need something that is intuitive enough to set up and administer. If you are familiar with either of these products I would appreciate pros and cons. If you have a different product that does not require 3 brains to setup and administer I would appreciate that as well. thanks, DF