What is SMTP Server Authentication (SMTP-Auth)?
In order to prevent unauthorized people from using your Email server to send their messages, your Virtual Private Server requires that anyone sending Email through your server has a valid Email address and password for your server. SMTP-Auth is the new standard for Email server authentication, and provides excellent security with no management hassles.The way SMTP-Auth works is to incorporate a username/password authentication system into the SMTP server itself.This effectively eliminates the need to maintain a database of authenticated POP users, which reduces the hassle of maintenance and the associated security risks.