As this product can be installed on a multitude of Windows Platforms it's very hard to say what you can use.
For example if you look at Exchange 2007 you need a 64 BIT OS to install on.
The system requirements for Mdeamon are fairly low end at
[i]System Requirements
? Computer with Pentium III 500 MHz
(or higher) processor (Pentium 4 2.4
GHz or higher recommended)
? 512 MB of memory (1 GB recommended)
? Typical Hard disk space required: 100MB,
additional space for any mail to be stored
? Microsoft Windows XP/2000/2003
operating system
? Internet Explorer 5.5 or higher
? Ethernet Network Card
? TCP/IP network protocol installed
? Internet or Intranet communication
capabilities.[/i]
So if you would like to post back with what you would like to install this on and how you would plan to use it as well as what it is needed for I'm sure that someone here will be able to suggest something.
But as Mdeamon is easy to use in comparison to something like Exchange you may find that you are no better off by changing the E-Mail Server as some others require far more work to Administer and keep running.
If you look here you'll find the On Line Tutorials for MDeamon
http://tinyurl.com/3hclet
and the E-Learning page is here
http://tinyurl.com/4z6njq
You would most likely be better off learning what is already in place rather than attempting to add something new and then learn that. People in IT Support are supposed to be able to use all the different Software available proficiently so by learning this now it will stand you in Good Stead Latter.
Col