On Nov 7, 2013, at 3:44 PM, John Coutts <[email protected]> wrote: > A review of our DNS logs yesterday revealed a number of requests for DMARC > records, followed by a great many requests for type 99 records which our DNS > server does not support. RFC 4408 dated September 2013 clearly states: > > Studies have shown that RRTYPE 99 has not seen any substantial use, > and in fact its existence and mechanism defined in [RFC4408] has led > to some interoperability issues. Accordingly, its use is now > obsolete, and new implementations are not to use it. > > Do the DMARC specs reflect this information? > DMARC relies on the result of the SPF layer. It is not for DMARC to specify how SPF should work.
http://trac.tools.ietf.org/html/draft-ietf-spfbis-4408bis-21 is not yet an approved document, expect a year or two after approval for SPF libraries to be updated. I find it concerning your DNS server does not support RRTYPE99 as many new types have been introduced since, like DNSSEC type of records...
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