MS Sender ID Framework

posted May 10, 2012, 8:43 AM by Unknown user   [ updated Aug 2, 2016, 5:38 AM by Andrew Chadick ]

The Sender ID Framework is an e-mail authentication technology
protocol that helps address the problem of spoofing and phishing by
verifying the domain name from which e-mail messages are sent. Sender
ID validates the origin of e-mail messages by verifying the IP address
of the sender against the alleged owner of the sending domain. Now
adopted by more than 10 million domains worldwide, Sender ID is
providing brand owners, senders, and receiving networks with
significant business and technical value.

How does Sender ID Framework work?

Sender sends an e-mail to Receiver.
Receiver’s inbound e-mail server receives e-mail and calls its Sender
ID Framework.
The Sender ID Framework looks up the SPF record of the domain that
Sender is using for sending the mail.
The receiving Mail Transfer Agent (MTA) determines if the outbound
Mail Server IP address matches IP addresses that are authorized to
send mail for the user.