Sender Policy Framework

FAQ

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The Basics

Adoption & Roll-Out

What is the price for using the SPF service?
Do I have to publish spf for each of my SMTP servers?
What if I don't control my DNS records?
My dns entries end in .local, how do I publish txt records for my domain?
Can I run an SMTP server on my laptop?
Can I whitelist hosts on my dmz without making their adresses publicly available? Can I bypass spf checks for certain servers?
The Demon Question: What about subdomains?
What policies besides SPF should I put in my MTA?
I've set up records, how do I test/validate/check it?
The SPF Why page says I should wait and try again in a few days. I did. Now what?
I'm an ISP. What should I keep in mind?
I'm a small company trying to get employees using Outlook to use SASL SMTP. There doesn't seem to be any combination of options that works. How can I make Outlook do SASL SMTP?

The Protocol

Objections

Miscellaneous

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Sender Policy Framework

FAQ

The Basics

Adoption & Roll-Out

The Protocol

Objections

Miscellaneous

The SPF Project

Documentation

Support