Editing Sender Policy Framework (section)

==History==
The first public mention of the concept was in 2000 but went mostly unnoticed.<ref name=dmarcian>{{cite web |title=The History of SPF |url=https://dmarcian.com/history-of-spf/ |website=DMARCian |publisher=DMARCian.org |access-date=15 May 2019|date=2019-03-18 }}</ref> No mention was made of the concept again until a first attempt at an SPF-like specification was published in 2002 on the [[Internet Engineering Task Force|IETF]] "namedroppers" mailing list by Dana Valerie Reese,<ref>writing as David Green</ref><ref name=":1">{{cite web |last1=David |first1=Green |title=Mail-Transmitter RR |url=https://marc.info/?l=namedroppers&m=102298046226504&w=2 |website=marc.info |access-date=15 May 2019}}</ref><ref name=dmarcian/> who was unaware of the 2000 mention of the idea. The very next day, [[Paul Vixie]] posted his own SPF-like specification on the same list.<ref>{{cite web |last1=Paul |first1=Vixie |title=Re: Mail-Transmitter RR |url=https://marc.info/?l=namedroppers&m=102298170127004&w=2 |website=marc.info |access-date=15 May 2019}}</ref><ref name=dmarcian/> These posts ignited a lot of interest, led to the forming of the IETF Anti-Spam Research Group (ASRG) and their mailing list, where the SPF idea was further developed. Among the proposals submitted to the ASRG were "Reverse [[MX record|MX]]" (RMX) by Hadmut Danisch, and "Designated Mailer Protocol" (DMP) by Gordon Fecyk.<ref>{{cite web |url=http://www.openspf.org/History/Pre-SPF |title=SPF: History/Pre-SPF |access-date=16 May 2009 }}</ref>

In June 2003, Meng Weng Wong merged the RMX and DMP specifications<ref>For a comparison among RMX, DMP and SPF, see [http://old.openspf.org/dmpvsrmx.html RMX and DMP compared] {{webarchive|url=https://web.archive.org/web/20080425222937/http://old.openspf.org/dmpvsrmx.html |date=2008-04-25 }} on the historical openspf site.</ref> and solicited suggestions from others. Over the next six months, a large number of changes were made and a large community had started working on SPF.<ref>{{cite web |url=http://www.openspf.org/History/SPF-2003 |title=SPF: History/SPF-2003 |access-date=16 May 2009 }}</ref> Originally SPF stood for ''Sender Permitted From'' and was sometimes also called ''SMTP+SPF''; but its name was changed to ''Sender Policy Framework'' in February 2004.

In early 2004, the IETF created the [[MARID]] working group and tried to use SPF and Microsoft's CallerID proposal as the basis for what is now known as [[Sender ID]]; but this collapsed due to technical and licensing conflicts.<ref>{{cite news |last1=Seltzer |first1=Larry |title=Internet Task Force Shuts Down Anti-Spam Working Group |url=https://www.eweek.com/security/internet-task-force-shuts-down-anti-spam-working-group |access-date=15 May 2019 |work=eWeek |date=22 September 2004}}</ref>

The SPF community returned to the original "classic" version of SPF.  In July 2005, this version of the specification was approved by the [[Internet Engineering Steering Group|IESG]] as an IETF ''experiment'', inviting the community to observe SPF during the two years following publication.  On April 28, 2006, the SPF [[Request for Comments|RFC]] was published as experimental RFC 4408.

In April 2014 [[IETF]] published SPF in RFC 7208 as a "proposed standard".