So, saying that MS Exchange is VERY Hardware intensive , requiring more Mail servers to do the same job that HP Openmail, or Sendmail , etc. requires isn't enough to dissuade those who are making the decisions? Bet it will dissuade the bean counters, eh? I would be surprised if your IT people don't already know this. The usual reason IT goes with MS is the Hype and the fact that everything "MUST BE" supported by the same vendor if possible. Last time I looked at the specs for MS Exchange server, it was recommended that you not have more than 250 mail accounts per server. That was a long time ago though. Back in the days when MS was weening people off of Microsoft Mail. About 5 or 6 years ago, maybe more, I can't remember. Hope that helps, Jeff McCright -----Original Message----- From: Monty Harder [mailto:lists@kc.rr.com] Sent: Wednesday, September 12, 2001 7:11 PM To: kclug@kclug.org Subject: Intellectual Ammunition I found out today that the corporate ITiots are migrating our email from POP to Exchange - after an overlap of indeterminate length with both in parallel, POP will be discontinued. I need to assemble a solid, factual, emotion-free case to dissuade them from this endeavor. I appreciate anything anyone can suggest in this regard.