[Pdns-users] publish SPF and TXT records?

Leen Besselink leen at consolejunkie.net
Thu Sep 6 14:54:51 UTC 2012

On Thu, Sep 06, 2012 at 02:35:13PM +0000, Marc van de Geijn wrote:
> Thanks, Arsen, for this information.
> Are there any statistics on the number of mailservers/... requesting SPF records instead of TXT records?

I know some of the software on our mailservers doesn't even try SPF.

isc.org and ietf.org do publish both, but they seem to be the exception.

hotmail.com , gmail.com , sendmail.com and many others only have TXT and no SPF.

> -----Oorspronkelijk bericht-----
> Van: Arsen STASIC [mailto:arsen.stasic at univie.ac.at] 
> Verzonden: donderdag 6 september 2012 16:15
> Aan: Marc van de Geijn
> CC: Peter van Dijk; pdns-users Users
> Onderwerp: Re: [Pdns-users] publish SPF and TXT records?
> * Marc van de Geijn <marc at bhosted.nl> [2012-09-05 16:14 (+0000)]:
> > According to rfc's the dns server should publish both spf and txt. We now create the spf, but not the txt version of the same spf.
> Hi Marc,
> Just take into consideration the ongoing IETF discussion about obsoleting SPF RR.
> 12.1.  The SPF DNS Record Type
>    Per [RFC4408], the IANA assigned the Resource Record Type and Qtype
>    from the DNS Parameters Registry for the SPF RR type with code 99.
>    The format of this type is identical to the TXT RR [RFC1035].  The
>    character content of the record is encoded as [US-ASCII].  Use of
>    this record type is obsolete for SPF Version 1.
>    IANA is requested to add an annotation to the SPF RRTYPE saying
>    "(OBSOLETE - use TXT)" in the DNS Parameters registry.
>    [NOTE TO RFC EDITOR: (to be changed to " ... has added ..." upon
>    publication)]
> This is taken from the latest draft:
> https://tools.ietf.org/wg/spfbis/draft-ietf-spfbis-4408bis/draft-ietf-spfbis-4408bis-06-from-05.wdiff.html
> just my 2ct
> -arsen
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