Scott,
I took some time and went through the log and found that the
following was true on all the ones I checked (around 50) entries, the following
examples were found using dnsreport.com about the Warnings:
Getting MX record for mail3b-better-health.wsol8423.com... Received an
NXDOMAIN response
OR
Getting MX record for atkingroup.co.uk... Received a response code of 2.
This should be treated as an ERROR (per RFC974), and the E-mail delivery
should PROBABLY be retried later
I found 1 or 2 that did show an entry listed in dnsreport, however, I
could not connect to them via telnet or nslookup's
Keith
-----Original Message-----
From: R. Scott Perry [mailto:[EMAIL PROTECTED]
Sent: Sun 1/25/2004 10:44 AM
To: [EMAIL PROTECTED]
Cc:
Subject: RE: [Declude.JunkMail] DNS Warnings
> Thanks for the aid. I'm with you on the second point, I
think
> our DNS server (Bind 8.4.3) attempted to verify the domain (all of
them
> look spam in nature) and couldn't find an A or MX listed for them and
> returned back to Declude that warning.
Actually, the "server failure" should indicate that your DNS server is
broken, so it definitely should *not* return the server failure unless
it
is broken, or *perhaps* if it receives a server failure from the
remote DNS
server.
Declude JunkMail is asking BIND if the domain has an MX or A record --
so
if it returns a server failure when it should not, it is hurting your
spam
control.
-Scott
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