From: David Presotto <presotto@closedmind.org>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] dns, cs, and smtp
Date: Wed, 2 Apr 2003 09:20:40 -0500 [thread overview]
Message-ID: <33b12c2b1669f419a88764085d32ae3a@plan9.bell-labs.com> (raw)
In-Reply-To: <20030402160726.I11994@cackle.proxima.alt.za>
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You mean like:
% ndb/dnsquery
> yahoo.com mx
yahoo.com mx 1 mx2.mail.yahoo.com
yahoo.com mx 5 mx4.mail.yahoo.com
yahoo.com mx 1 mx1.mail.yahoo.com
> mx1.mail.yahoo.com
mx1.mail.yahoo.com ip 64.157.4.84
mx1.mail.yahoo.com ip 64.157.4.83
mx1.mail.yahoo.com ip 64.156.215.5
mx1.mail.yahoo.com ip 64.157.4.82
> 64.157.4.84
84.4.157.64.in-addr.arpa ptr mta-v14.level3.mail.yahoo.com(0)
>
Or do you want a program that does it?
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From: Lucio De Re <lucio@proxima.alt.za>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] dns, cs, and smtp
Date: Wed, 2 Apr 2003 16:07:27 +0200
Message-ID: <20030402160726.I11994@cackle.proxima.alt.za>
On Tue, Apr 01, 2003 at 09:21:39PM -0500, David Presotto wrote:
>
> I updated dns, cs, and smtp to better handle the situation
> of some chunk of the dns tree being unreachable. Before the
> changes, smtp would often return mail prematurely if we
> couldn't reach part of the dns tree. Now it just leaves the
> mail queued to try again later.
>
I've been meaning to ask for a while: the man pages are not very
clear (to the extent that I have been digging) about the format of
reverse DNS resolution.
Perhaps an example will help? I haven't had much success with
experimentation and reading the source is always a little daunting.
++L
next prev parent reply other threads:[~2003-04-02 14:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-02 2:21 David Presotto
2003-04-02 14:07 ` Lucio De Re
2003-04-02 14:20 ` David Presotto [this message]
2003-04-02 14:49 ` Lucio De Re
2003-04-02 14:56 ` David Presotto
2003-04-03 6:43 ` Lucio De Re
2003-04-03 6:50 ` George Michaelson
2003-04-03 15:47 ` David Presotto
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