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Re: 451 Could not complete sender verify callout

To: qmail@list.cr.yp.to
Subject: Re: 451 Could not complete sender verify callout
From: "Matthew R. Dempsky" <mrd@alkemio.org>
Date: Tue, 30 Jan 2007 09:10:33 -0600
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In-reply-to: <45BF5CEA.706@dotcomholdingsofbuffalo.com>
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References: <45BF5CEA.706@dotcomholdingsofbuffalo.com>
On Tue, Jan 30, 2007 at 09:57:46AM -0500, Phil Breskey wrote:
> Hi, I am having trouble mailing a few domains out there on the web. 

What domains?

> When we try to send them an email, it will stay in the queue for a few 
> days, then come back to us with the error "451 Could not complete sender 
> verify callout".

Most likely that error message is being generated by the recipient
mail servers, and it never goes away for the lifetime of qmail's
queue.  Does it also say ``I'm not going to try again; this message
has been in the queue too long''?

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