Merak Mail Server Software - The same mail server used by NATO, U.S. Navy, FBI, Toyota and many more. Supporting unlimited users, POP3, SMTP, IMAP4, HTTP protocols, mail server based virus scanning, spam filtering, and web mail accounts. Merak Mail Server is a total email solution for office LAN or Internet communication. It is extremely easy to install and maintain and its powerful set of features will meet any customer's needs.