I'm researching the possibility of replacing -- for cost reasons -- our IMail server with an openSource solution.
Our IMail server is currently running on WinNT, with fairly heavily used 1200 user accounts.
I'd like to go with one of the following replacements on a linux server :
Note: I'll need a "web"-based email account access and good Virus checking and security features.
1) Sanity check -- Is what I'm proposing possible/workable ?
2) Are my two replacement choices decent ?
3) Can anyone forward links, info. on migration from IMail --> Postfix / QMail .... or some other choice you'd recommend ?
Hope to hear from someone with thoughts on the above......