NTMail - Version 6d NTMail is an email post office (or mail server) which allows companies and ISPs to manage the collection and delivery email. It complies with all the Internet Mail Standards (RFCs), and is fast, reliable and easy to use (with on-line context sensitive help and manuals). All you need is a small system (90MHz Pentium, 32Mb RAM) running Windows NT/2000, Solaris or Linux and a full or dial-up connection.Options include SQL and LDAP authentication.