[Dshield] SMTP DNS record question

Richard Roy RoyR at justicetrax.com
Mon Jan 12 17:07:18 GMT 2004


That isn't the customer.  Sorry, that is the place I did the querry
instead.
If that was unclear I am sorry.
The domain was vdh.state.vt.us 
Which returns:

Domain Type Class TTL Answer vdh.state.vt.us. MX IN 86400
mx1.state.vt.us. [Preference = 10] vdh.state.vt.us. MX IN 86400
mx2.state.vt.us. [Preference = 10] vdh.state.vt.us. MX IN 86400
kraken.vdh.state.vt.us. [Preference = 0] vdh.state.vt.us. MX IN 86400
mx0.state.vt.us. [Preference = 10] state.vt.us. NS IN 86400
ns2.state.vt.us. state.vt.us. NS IN 86400 ns1.state.vt.us.
kraken.vdh.state.vt.us. A IN 86400 159.105.134.230 mx0.state.vt.us. A IN
86400 159.105.23.194 mx1.state.vt.us. A IN 86400 159.105.23.130
mx2.state.vt.us. A IN 86400 170.222.64.130 ns1.state.vt.us. A IN 86400
159.105.23.130 ns2.state.vt.us. A IN 86400 170.222.64.130 


As I said, 3 separate MX records all with the same preference.  I
thought it was odd and might be part of the problem, I'll admit I could
be way off base, but I thought that multiple MX records had to have
different preferences.



-----Original Message-----
From: list-bounces at dshield.org [mailto:list-bounces at dshield.org] On
Behalf Of David Hart
Sent: Monday, January 12, 2004 9:58 AM
To: General DShield Discussion List
Subject: Re: [Dshield] SMTP DNS record question


On Mon, 2004-01-12 at 11:42, Richard Roy wrote:
> I am working to debug why I am having difficulties sending to a 
> customer email.  I have implemented a new firewall, and spam blocker, 
> and have yet to be able to point to either as the root of the problem.

> So for grins, I went to www.dnsstuff.com and did a querry on them.  
> They have 3 MX records, MX0, MX1, MX2 all with different hosts and IP 
> addresses.

I show just one MX (mail.dnsstuff.com) which, in turn, is handled by a
spam handler, declude.com which, in turn, uses imail, which in turn is
one terrible MTA which, in turn, is probably the problem ;-)
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