[122716] in North American Network Operators' Group
Re: Spamhaus...
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Sat Feb 20 10:10:01 2010
To: Daniel Senie <dts@senie.com>
In-Reply-To: Your message of "Sat, 20 Feb 2010 09:46:21 EST."
<5045AD6C-981E-42DA-9D16-FB080838BFE0@senie.com>
From: Valdis.Kletnieks@vt.edu
Date: Sat, 20 Feb 2010 10:08:58 -0500
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Sat, 20 Feb 2010 09:46:21 EST, Daniel Senie said:
> I don't know when this was that they didn't do validation.
So they validate...
> The Barracuda boxes will accept mail for domains they know about but
> without validating the email address in the event the target mail server
> is down. And yes, it'd be nice if they instead sent back a 421 and let
> the email queue at the point of origination in such cases. So if a mail
> server is down and comes back up, some emails will likely be present in
> the queues that shouldn't have been accepted.
Except for when they don't, and instead of 421'ing they backscatter.
Gotcha.
>
>
>
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