E-MailRelay is a simple SMTP proxy and relay MTA, written in C++, for Linux and Windows. As a proxy all messages can be passed through a user-defined program, such as a spam-filter, which can drop, readdress, or edit messages as they pass through.
System Requirements
Sistema Operativo: All 32-bit MS Windows (95/98/NT/2000/XP/Vista/7), MacOSX, POSIX (Linux,BSD,Solaris etc..), Linux, Windows 95/98/ME, Windows NT/2000, Windows XP