From: geoff@plan9.bell-labs.com
To: 9fans@cse.psu.edu
Subject: Re: [9fans] $smtp dns failure
Date: Tue, 16 Jan 2007 15:50:05 -0500 [thread overview]
Message-ID: <ae6a688279bfa41b258d6f299d914678@plan9.bell-labs.com> (raw)
In-Reply-To: <81c03baf080b2b71267e6095a9927d2c@coraid.com>
When talking about this, it's important to distinguish between the DNS
reporting that there is no MX record for a domain and reporting that
there is a transient DNS error and thus it can't tell if there is an
MX record for a domain.
If there is no MX record, smtp should use an A or A6 record, if it
exists. If there is a DNS error looking up the MX, smtp should stop
and not use any A or A6 record, since that may be the wrong
destination, and you can't tell until the transient DNS error passes.
next prev parent reply other threads:[~2007-01-16 20:50 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-16 20:31 erik quanstrom
2007-01-16 20:50 ` geoff [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-01-16 17:01 erik quanstrom
2007-01-15 19:28 erik quanstrom
2007-01-15 19:42 ` Paul Lalonde
2007-01-15 16:55 Matthias Teege
2007-01-15 18:05 ` Federico Benavento
2007-01-15 19:22 ` Russ Cox
2007-01-15 18:10 ` geoff
2007-01-15 20:02 ` Matthias Teege
2007-01-15 23:35 ` Steve Simon
2007-01-16 16:46 ` Matthias Teege
2007-01-16 18:21 ` Steve Simon
2007-01-16 18:31 ` erik quanstrom
2007-01-16 18:44 ` Russ Cox
2007-01-16 18:52 ` lucio
2007-01-16 19:05 ` erik quanstrom
2007-01-16 19:30 ` Russ Cox
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