I've configured our internal Exchange servers to relay outbound mail through a proxy/firewall. <BR><BR>I've noticed that the headers on external emails contain the private IPof the internal mailserver ...

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 ...

Many Mail.app users are experiencing an problem in which the application will not send. The Mail application receives incoming messages properly, but when users attempt to send messages they are ...

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 ...

Hackers are actively exploiting a recently disclosed RCE vulnerability in Zimbra email servers that can be triggered simply by sending specially crafted emails to the SMTP server. The Zimbra remote ...