Mail Server Software Suggestions?

[Tim Pickard]

I need to get a new mail server software for my organization.

Parameters:
Free or fairly cheap (<$250)
Outlook compatable - (just to set out of office)
Web Interface - on the road access.
Reliable
RHES3 supported

What Software or combinations there of do you know meets these specs?

Tim

Tim Pickard
Systems Support Analyst and Administrator
40 Salem Street 
Lynnfield, MA  01940 
p.781-295-0072
f.781-295-0077
tpickard at crossref.org