[Dshield] SMTP DNS record question
DavidHart at TQMcube.com
Mon Jan 12 17:47:51 GMT 2004
On Mon, 2004-01-12 at 12:07, Richard Roy wrote:
> That isn't the customer. Sorry, that is the place I did the querry
> If that was unclear I am sorry.
> The domain was vdh.state.vt.us
> Which returns:
Well I can connect to the mail server via all three mx records:
vdh.state.vt.us. 86400 IN MX 10 mx2.state.vt.us.
vdh.state.vt.us. 86400 IN MX 10 mx0.state.vt.us.
vdh.state.vt.us. 86400 IN MX 10 mx1.state.vt.us.
mx0.state.vt.us. 86400 IN A 126.96.36.199
mx1.state.vt.us. 86400 IN A 188.8.131.52
mx2.state.vt.us. 86400 IN A 184.108.40.206
> 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 220.127.116.11 mx0.state.vt.us. A IN
> 86400 18.104.22.168 mx1.state.vt.us. A IN 86400 22.214.171.124
> mx2.state.vt.us. A IN 86400 126.96.36.199 ns1.state.vt.us. A IN 86400
> 188.8.131.52 ns2.state.vt.us. A IN 86400 184.108.40.206
> 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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