spf ent txt records.
Shane Kerr
shane at isc.org
Wed Mar 13 12:26:10 UTC 2013
Hugo,
On Wednesday, 2013-03-13 11:33:35 +0000,
hugo hugoo <hugobxl at hotmail.com> wrote:
> Dear all,
>
> I received the following question and I am not able to aswer as spf
> records are still mysterious to me. We are using BIND 9.7.
>
> Thanks in advance for your answers,
>
> Hugo,
>
>
>
> Does our DNS-server support SPF-type records? Or do we put SPF-info
> in a TXT-record?
> Ref. :
> Early implementations used TXT records for implementation before the
> new record type was commonly available in DNS software. Use of TXT
> records for SPF was intended as a transitional mechanism. However,
> according to the current RFC, RFC 4408, section 3.1.1, "An
> SPF-compliant domain name SHOULD have SPF records of both RR types. A
> compliant domain name MUST have a record of at least one type," and
> as such, TXT record use is not deprecated.[2]
BIND does support the SPF type. Note however that the latest draft
version of SPF actually deprecates SPF, and recommends using TXT
records:
3.1. DNS Resource Records
SPF records MUST be published as a DNS TXT (type 16) Resource Record
(RR) [RFC1035] only. The character content of the record is encoded
as [US-ASCII]. Use of alternate DNS RR types was supported in SPF's
experimental phase, but has been discontinued. See Appendix A of
[RFC6686] for further information.
http://datatracker.ietf.org/doc/draft-ietf-spfbis-4408bis/?include_text=1
--
Shane
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