SMTP Authentication is the process whereby your email name and password are authenticated by the PenTeleData's outgoing email server each time you send an email message. In the past, our outgoing email server did not require SMTP Authentication. This made it more difficult to prevent spam, open relays, and Denial of Service (DoS) attacks affecting our email system. By requiring users to authenticate to sending email, we will be able to greatly reduce the amount of these violations which occur as well as provide an even higher lever of security for our customers.