Greg Hewgill (ghewgill) wrote,
Greg Hewgill
ghewgill

spf -all

A recent post by taral piqued my curiosity and made me wonder just how many domains publish "-all" (hardfail) in their SPF records. To that end, I have set up spf-all.com which aims to count them.

I am currently loading domains into the database. This involves a DNS lookup for each domain name, so it's only going at an average rate of a few per second. I have several million domain names ready to be loaded, so I expect the initial load to take a few weeks. I have grabbed domain names from the following sources so far:

If you can think of any other easily obtainable list of domain names, let me know!

And for what it's worth, the highest-alexa-ranked domain that publishes SPF -all is ...drumroll... blogger.com.

Subscribe

  • 2013 in review

    2013 is the year when everything changed. The biggest event was the birth of our daughter Lily. She was born prematurely in Shanghai while we…

  • 2012 in review

    2012 has been fairly quiet. Maybe it just seems that way because I haven't actually written anything new in this blog since last year's annual…

  • new photo galleries

    I've been busy processing photo galleries from the last year (or two) and putting them online for your perusal. Vancouver 2010 Northland…

  • Post a new comment

    Error

    Anonymous comments are disabled in this journal

    default userpic

    Your reply will be screened

    Your IP address will be recorded 

  • 2 comments