Frank Ellermann wrote:
Identifying TXT records by initial "tags" such as "v=spf1" is easy
as long as the desired TXT record has an unambiguous version tag.
The various ADSP drafts fail to provide the essential version tag
for their identification, this is no general TXT wildcard problem.
The general TXT problem is the *size* of all RXT records combined,
and the various ADSP drafts refuse to share SPF records for their
limited size needs.
While I myself am leaning away from TXT records for other reasons, this
is not one of them. ADSP is a bit more safe because like DKIM it uses a
_adsp label. If you look up a TXT record with that label it makes less
sense to expect anything other than ADSP.
Eliot
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