From: Andreas Winkelmann (mlawinkelmann.de)
Date: Mon Jan 08 2007 - 13:52:00 CST

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On Monday 08 January 2007 20:39, Cha Yang wrote:

> I'm trying to track a "550 5.1.1 <someonesomeplace.com>: Recipient
> address rejected: User unknown in local recipient table;" error (I've
> replace the email address)
>
> This was brought to my attention because the user didn't get that piece
> of email.
>
> That user does exist and normally does get email just fine. Looking
> through the log, within the last year, this seemed to have happened
> twice- I know it's not much, but the person happens to be my boss.
>
> Postfix 2.3.2
> Suse Linux 10.1
> Dovecot 1.0 rc8 (for POP and IMAP)
> Apache serving Webmail (squirrelmail)
>
> Nothing else on this box.
>
> Using local users /etc/passwd file
>
> Any ideas where I can start looking?
>
> BTW - not a super busy mail server. we get about 3K pieces of mail per
> day, with another 3K 550 rejects.

"local recipient table" means on of the Maps in local_recipient_maps.

# postconf local_recipient_maps

Tell us, where "someone" is in. If it is a local User, and has an entry in passwd,
check if nscd is running. This is a Cache-Daemon which sometimes, at least in
early Versions does some strange things. Maybe it is a try to stop it, or configure
it to not cache passwd-Lookups for a test time.

--
        Andreas

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