Sender Permitted From (SPF) News
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by Wayne, February 4 2004
The growth rate of SPF has been inconceivable. Just trying to keep up
with everything will keep you very busy. Here summary of what's been
going on in the last couple of weeks.
*** SPF is Growing Quickly ***
Since the last SPF News update, the number of domains listed on the
SPF adoption roll has doubled from 3,000 to 6,000 and this is far from
a complete list. Meng reports that around of a third of the people
who have used the SPF Wizard have added SPF records for their domain.
Other indicators show that the number of systems checking SPF records
has also more than doubled. There have also been several new
well-known domains that have adopted SPF, including:
w3.org The website for standardizing the web.
motleyfool.com Financial news and analysis website
symantec.com A major anti-virus software company
ticketmaster.com The lead seller of concert/sports tickets
Also see:
http://www.infinitepenguins.net/SPF/register.php
http://spftools.infinitepenguins.net/earlyadopters.php
http://spf.pobox.com/wizard.html
SPF has been in news a lot lately. There are frequent references to
SPF on SlashDot, but there have also been good articles in places like
Wired, the New York Times, and InfoWorld.
*** MIT Spam Conference Update ***
Meng Weng Wong attended the MIT Spam Conference on Jan 16th and was
able to spread the good word about SPF and made many important
contacts. Eric Raymond gave a presentation on SPF and, together, Eric
and Meng tried to answer questions from the audience, all in their 20
minute time slot.
Eric's talk can be viewed on the SpamConference.org website. His
presentation was in the second afternoon session, about 42 minutes in.
See:
http://spamconference.org/
http://web.mit.edu/webcast/spamconf04/spam-conference-16jan04-afternoon2-220k.ram
*** Lots of Movements in the Shadows ***
Thanks to the contacts that Meng has made at the MIT Spam Conference
and elsewhere, he has been talking to a lot of people about using
SPF. AOL has already published SPF records and, while nothing has
been publicly announced yet, it appears that many of the other major
ISPs are very interested in it.
*** Active Development of SPF tools ***
While not as glamorous, the more important work of creating, testing and
debugging the SPF tools has been just as active. Many of the SPF
implementations are far more solid now, and a standardized test suite
is making sure that all implementations give the same results. The C
implementation, libspf, has advanced into beta testing at several
sites now, as has a qmail specific C implementation. A lot of work
has been done on the patches for most major MTAs.
http://spf.pobox.com/downloads.html
http://libspf.org/
http://www.saout.de/misc/spf/
While work has progressed on cleaning up the SPF specification and
clarifying corner cases and details, one significant change has been
made. The "softfail" status has been resurrected after having been
removed late last fall. Softfail allows domain owners to advertise
that they are transitioning to a more restrictive SPF policy and that
emails that do not pass the current policy should be flagged with a
warning and looked at more closely.
http://spf.pobox.com/draft-mengwong-spf.02.9.5.txt
In addition, Wechsler has started an SPF Wiki to help answer questions
and document SPF.
http://spfwiki.infinitepenguins.net/wiki/SenderPermittedFrom/HomePage
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