Stopping Spoofed Email

Sender Policy Framework (SPF), formerly Sender Permitted From, is an extension to the  SMTP standard. SPF stops forgers from using YOUR email address in the  “From” addresses in email. This helps to counter e-mail spam. The combination is also called SMTP+SPF. SPF was originally designed by Meng Weng of POBOX.

In the Microsoft environment (Exchange and DNS) there is a simple site you can go to that enables you to make your email domain SPF compliant.


Excerpt from :

“Briefly the design intent of the SPF record is to allow a receiving MTA (Message Transfer Agent) to interrogate the Name Server of the domain which appears in the email (the sender) and determine if the originating IP of the mail (the source) is authorized to send mail for the sender‘s domain.”