Exchange2000 to Linux based

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Author: tickticker
Date:  
Old-Topics: OpenBSD or..
Subject: Exchange2000 to Linux based
Hello everyone,

Been busy with a few contracts, but I'd like to ask the list for some
suggestions/recommendations and leave a few comments of my own.

I have a client with over 1700 users on Exchange2000 and when I audited them,
they only had 10 licenses... oops. So I have them sold on going to the linux
platform and using qmail or sendmail. I think qmail would work fine, but
they will be expanding up to 5000 users over the next couple years.

Question: will this work on a single box reliably? It's a dual 1.7 with a
raid5 configuration and 1.2 gigs RAM. Simple email is all it will do.

Question: Is there any conversion I can do or using tab delimited text files
from active directory or is it a start from scratch proposition? User names
or accounts or even the mail files?

Comment: If there aren't then shouldn't there be? I'm thinking of the admin
with 1,000+ users saying "NO WAY am i going to do this conversion, It would
take forever!"

Question: Anyone have experience doing this?

Any help would be appreciated, expecially going forward. While I will support
a client's Microsoft base, I always recommend a Linux solution but this is
the first Medium sized taker I've encountered. Maybe someone knows of a
knowledge base that tackles small, medium, large and enterprise class
conversions ( Sales tactics, implementation, and client education )

Okay so my questions and comments are all mixed up, but I hope you get the
gist of what I'm trying to find out here.

Again, ANY help is appreciated. I am doing research on my own but the voice
of experience is, to me, a better resource, expecially when geographically
close.

Thanks in advance,

anthony