Sender Policy Framework

Tools

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SPF Tools

SPF record wizard

http://www.openspf.org/wizard.html

Email based SPF testers

Port25.com provides a tool to test whether SPF is working. Send an email to check-auth@verifier.port25.com and you will receive a reply containing the results of the SPF check.
The ESPC also provides an SPF verification tool

Form based SPF testers

Scott Kitterman's SPF tester
The standard reference why.html page
DNS Stuff (home of Declude JunkMail)

Unless noted otherwise, all content on this website is dual-licensed under the GNU GPL v2 and the Creative Commons CC BY-SA 2.5.
The openspf.org domain name was donated by James Couzens, and related domain names by John Pinkerton. Thanks!

Sender Policy Framework

Tools

SPF Tools

SPF record wizard

Email based SPF testers

Form based SPF testers

The SPF Project

Documentation

Support