On Sun, 7 May 2006, Magnus Holmgren wrote:
>
> My first reaction was "Yuck!". Looks like a really ugly hack to me,
> overloading the SRV RR fields and all. SPF at least uses TXT RR's, which
> has no particular semantics. On the other hand there won't be any
> collisions, as smtp isn't an existing IP protocol. Any other thoughts?
CSA uses SRV records because that means that in the majority of cases a
conformance check only requires one DNS lookup. SPF usually requires many
DNS lookups, and then gives you the wrong answer.
Tony.
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