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.

Ok so I've recently moved from exim to postfix. Everything works just as it did with no problems. I'm trying to setup smtp auth with tls so that I can authenticate to my server and be able to send ...

I am trying to enable SMTP AUTH using Postfix and Cyrus SASL. This is just a mail server for my personal domain and used by family. With the numerous mobile clients these days like iPads and iPod ...

Microsoft's Exchange team is warning Exchange Online users that many of its customers are being targeted by password spray attacks using its basic authentication. The warning comes as Microsoft begins ...

Microsoft has launched High Volume Email for Exchange Online in public preview, with free access until May 2026 for organizations sending high-volume email.