help with T_ANY
barmar at alum.mit.edu
Sat Oct 21 06:51:57 UTC 2006
In article <ehc95l$rme$1 at sf1.isc.org>, cowbert at gmail.com wrote:
> As you all know, djb's mail server qmail makes a T_ANY query before
> making any others. My problem is somehow my bind 9.3.2 authoritative
> will often only return NS RRs to resolvers that drop other records of
> my zone from their cache (specifically, the nameservers at yahoo.com).
> This causes yahoo's qmail to bounce with "CNAME lookup timed out" a
> lot, which is unacceptable for us. It is my understanding that T_ANY
> will only return what's cached, but if I am incorrect about this how do
An authoritative server should return all the records.
> I fix my nameserver so that the wildcard query will return at the very
> least, the MX record for the zone (besides increasing TTL)?
There's nothing to configure. If you're authoritative you'll return all
the records, if you're caching you'll return what's in the cache; if you
don't have any records in the cache you'll forward the query to the
authoritative server, it will return all the records, and you'll cache
them and return them to the client.
> some details of the zone:
> foo.bar. 14400 IN SOA ns.foo.bar email.foo.bar 2006102016 3600
> 3600 604800 14400
That's not very useful details.
Barry Margolin, barmar at alum.mit.edu
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