MDaemon

emon is a standard SMPT/POP/IMAP email server that offers many options, including spam protections, web access to email, virus protection, and the option for remote management. Also, the program includes Worldclient applications (webmail-based) and ComAgent, with which you can establish a complete contacts and address book, in addition to having the ability to instant message with your contacts. MDaemon lets you forward email to the entire network through an Internet Service Provider (ISP) and easily integrates Fax service during installation of MDaemon. With this simple application, you will have confidence that you are using a secure and reliable email server, since many companies rely on this software for their email services.