FAQ

General

• How much does it cost to use the SPF service?
• I just don't understand SPF, I just want to get my e-mails!
• Do I need to publish an SPF entry for all my SMTP servers?
• Do I need SPF?
• What does SPF actually do now?
• I manage my own domains and want to publish or revise my SPF record.
• What is SPF and why does it complicate my life?

Acceptance and introduction

• Common errors when creating an SPF record!
• Can I use SPF with a dynamic IP address?
• The Evil Question: What about subdomains?
• How do I publish TXT records if my DNS records end in .local?
• I am an ISP, what do I have to consider?
• What if I do not manage my DNS records myself?
• Can I bypass SPF checks for specific servers? Can I whitelist hosts on my dmz without publishing their addresses?
• My record looks fine, why do I get a TempError from Hotmail and how can I fix it?
• Does Hotmail run SPF?
• What guidelines besides SPF should I use in my MTA?
• My message does not arrive at Hotmail, not even in the Spam folder. Why?
• Can I run an SMTP server on my laptop?
• I have created my own entries. How do I test, validate, check them?
• The SPF page "Why" indicated that I should wait a few days and then try again. I did. And now?

Protocol

• Explained: How does SPF work in 1 minute