Why would BIND timeout on only 'A' results?

[Barry Margolin]

In article <ddk9rc$2jb5$1 at sf1.isc.org>,
 Brad Knowles <brad at stop.mail-abuse.org> wrote:

> At 5:21 PM -0400 2005-08-12, Dave Clark wrote:
> 
> >  Check out this strangeness.  Keep in mind I am not the owner of this 
> >  domain.
> >  I'm just helping this guy with diagnosing the problem with his dns server:
> >
> >  dig cawunited.com (times out)
> 
> 	Is this still a problem?  Because dnsreport.com doesn't show any 
> timeouts at all.  See 
> <http://www.dnsreport.com/tools/dnsreport.ch?domain=cawunited.com>.

I don't think DNS Report ever tries to perform an A query on the domain 
name.  It looks up the SOA and MX records, and the A record of 
www.<domain>.

I notice that I get a timeout when I try to look up the A record of 
mail.cawunited.com, which the MX record points to, but DNS Report 
doesn't seem to have a problem when validating the MX record and testing 
mail to the domain.  But maybe it's using the cached A record that gets 
returned as an Additional Record when performing the MX lookup.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***