I have some e-mail on my Exchange Queue for 3/4 domains that just won't send. It just says "SMTP Protocol Error Occurred". I activated logging in MSExchangeTransport ...

Security researchers have found inconsistencies in how some Simple Mail Transfer Protocol (SMTP) servers handle end-of-data sequences. This allows the injection of SMTP commands into email messages in ...

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 ...

In this post, we will talk about how to fix Outlook Error 0x800CCC67. It is an SMTP protocol error that prevents users from sending email messages. SMTP stands for ...

I pretty frequently get requests for help from someone who has been impersonated—or whose child has been impersonated—via email. Even when you know how to “view headers” or “view source” in your email ...

Declare their ability to receive TLS-secured connections Declare particular methods for certificate validation Request sending SMTP servers to report upon and/or refuse to deliver messages that cannot ...

One of the most common uses of network systems is for e-mail-based communications. As such, a great deal of attention has been given to securing e-mail systems. However, most of this focus has been in ...

A recent report from U.S.-based email security firm PowerDMARC found that most sectors in Morocco, including banks, have weak email security. Almost none use the MTA-STS protocol, which protects ...