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Alex van den Bogaerdt wrote:
On Wed, Jan 10, 2007 at 12:43:24AM +0000, Julian Mehnle wrote:
| * Fixed a very minor bug where a "TempError" result would
| incorrectly be returned in the very rare case when the SPF-type
| look-up succeeded but returned 0 records, and the following TXT-type
| look-up errored or timed out. Now a "None" result is correctly
| returned in that case as demanded by RFC 4408.
While I'm sure this is what the spec requires, I'm no longer sure this
is a sensible behavior. Which means that there is probably a bug in
the spec.
Any comments?
"None" should be returned when there are no records published, or when
the domain does not exist. (RFC 4408 section 2.5.1)
If an SPF-type lookup succeeds, clearly the domain does exist. This
means there have to be zero or more resource records for the TXT-type
lookup. Any other answer is not acceptable IMHO.
But the TXT-type lookup could accidentally fail due to resource constraints
on the authoritative name server or on the resolver.
If the TXT-type lookup fails, shouldn't a PermError or TempError be
returned?
Exactly my thought.
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