SPF Records

By Mark Castle on 4th March, 2011.

What are SPF Records

SPF allows the owner of an Internet domain to use special DNS records to specify which machines are authorised to transmit e-mail for that domain. For example, the owner of the example.com domain can designate which machines are authorised to send e-mail whose e-mail address in the Return-Path ends with “@example.com”.

Receivers checking SPF can then reject any e-mail that claims to come from that domain, but fails in a check against the IPs listed in the sender policy of this domain.

For more overviews, guide and tech content, visit the Secura blog.

Image credit: sfiochacho/Shutterstock.com

Mark Castle


Marks is a director at Secura hosting and one of our resident Network specialists.

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