I'm writing a program that will have to send mail through SMTP. Doing that, I came across a really weid behavior of our exchange 2013 server: If the SMTP session authenticates the session through AUTH ...

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.

Microsoft has started deprecating Basic Auth in Exchange Online starting from today, as it has been warning for years. Customers are encouraged to migrate to Modern Auth (OAuth 2.0). After years of ...