Thanks, I think they figured it out. The customer is always
right....sigh....
I used the list because I needed to know if there was a quick fix here,
I added them to a spamassassin whitelist.
Clifton Royston wrote:
On Thu, Sep 22, 2005 at 12:00:47PM +0000, [EMAIL PROTECTED] wrote:
Date: Wed, 21 Sep 2005 09:51:49 -0600
From: Steve Suhre <[EMAIL PROTECTED]>
Subject: BGP & reverse dns
To: freebsd-hackers@freebsd.org
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I have a client who's using BGP on their own network but use our mail
servers. They're having trouble sending mail because the server here
can't resolve the IP address back to their network. And if I run the IP
through DNSStuff.com it returns an infinite loop error. They claim they
aren't having trouble anywhere else though....
I don't want to turn off reverse lookups, is there anyway to get around
this? Or a simple fix on their end? I know nothing about BGP routing...
We're running sendmail, and spammassassin through procmail. The mail
problem started recently when we upgraded sendmail and added
spamassassin, but their DNS/BGP problems have been there for a while....
This question belongs on a different list; I'd normally say
freebsd-questions, but it has nothing to do with FreeBSD at all as far
as I can see. Try inet-access or some similar mailing list which deals
with Internet access and configuration issues.
To save a little list bandwidth and give you a starting point for
that list, my tip is forget about BGP unless it's proved that there is
a routing problem. The routing protocol your client is running (BGP)
has nothing to do with DNS; these operate on completely different
network layers. Useful tools for resolving DNS problems are "dig",
"host", and "whois"; these will let you tell what name server is
responsible and whether there is a problem with their name servers.
The immediate question to look into would be who delegated their
address space to them, and what name server is responsible for its
rDNS.
-- Clifton
--
Steve Suhre
[EMAIL PROTECTED]
719.439.6052 Cell
719.632.2897 Home
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