In article <mailman.348.1401978387.26362.bind-us...@lists.isc.org> you write: >Are SPF RR types finally dead or not? I�ve read through rfc7208 it appears >that they are:
They're dead as in nobody looks at them other than legacy software that hasn't been updated. The SPF record was a screwup from beginning to end. By the time 4408 came out, there was already a lot of running SPF software using the badly designed TXT record. The mail community never wanted the SPF record but it was added reluctantly to 4408 due to filibustering by the DNS crowd. There was never a plausible transition plan for publishing SPF records, and by the time 7208 came out it was clearly time to put type 99 out of its misery.* It's extremely unlikely that the RRTYPE will ever be reused, so you can publish them if you want, but don't expect anyone to pay attention to them. Perhaps they can be reused for steganography. R's, John * - Mark doubtless feels differently.
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