Re: [courier-users] 456 plus 502 errors

On 2008-04-30 21:02, Sam Varshavchik wrote:
> > Apr 30 16:09:27 mail courieresmtpd: error,relay=::ffff:xx.240.81.28,
> > from=<markc@renta.net>,to=<xyz@bigpond.net.au>:
> > 456 Address temporarily unavailable.
> >
> > Apr 30 16:09:27 mail courieresmtpd: error,
> > relay=::ffff:xx.240.81.28,msg="502 ESMTP command error",cmd: DATA
>
> It's highly unlike that it's "anyone"@bigpond.net.au, but rather these
> specific recipients. Looking earlier in your mail log you should see a
> single delivery failure to these addresses, which starts the backscatter
> suppression timer.
>
> This is backscatter suppression. You can read up on it in INSTALL and the
> courier man page.

Ah right, thanks Sam. Now I know what the "signature" of backscatter
suppression looks like in the log files. However, I'm still unsure of
why I can't clear this user. I've tested that a direct SMTP connection
works okay so I assume it should be okay to clear the backscatter entry,
but it won't...

# courier clear xyz@bigpond.net.au
xyz@bigpond.net.au cleared.

# courier show all
xyz@bigpond.net.au

Is there something else I need to do to turn of backscatter for this user ?

--markc

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