Verizon is one of the many Internet Service Providers that require you to authenticate when sending mail. The purpose of SMTP authentication is to reduce email spamming and abusive mailing behaviors.

Configuring an SMTP (Simple Mail Transfer Protocol) server on Windows Server is a common task for system administrators who need to enable applications or websites to send email messages. Unlike a ...

With many types of business email accounts, your computer connects to a machine called the Simple Mail Transfer Protocol server when you send messages. If you have difficulty sending messages, there ...

Subject does most of the work here, but I'll expand. [edit] Maybe if I had just RTFM'd harder I would've found my answers... I think this will help, but leaving the post up in case anybody else has ...

In an effort to improve the way we use email protocols across devices, Google is offering support for OAuth for its GMail IMAP and SMTP servers. Their new authentication mechanism which they are ...