Basic Mail Server Security
Ipswitch iMail Server
SuSE Linux OpenExchange
What to look for
This company has 200 users but is looking to expand to 400+ in the next few years.
Approximate budget: Small
Requires: A mail server that can cope with the company's intended growth.
Concerns: Cost -- the mail server needs to be inexpensive and easy to maintain.
The Scenario 1 winner is Novell's SuSE Linux based OpenExchange, closely followed by Sendmail. Novell's application is far easier to manage, but also costs $$$.
Sample scenario 2
This large company has 30,000 staff spread across five geographic locations and requires a mail server.
Approximate budget: Open.
Requires: A mail server that is powerful and secure. Remote administration and Web access for travelling staff is a must.
Concerns: Cost isn't an issue, but reliability is very important.
The Scenario 2 winner is IBM Domino for its scalability, support, and mobile options. It also helped that cost wasn't an issue for the scenario company.