From owner-freebsd-questions  Mon Mar  4 12:12:37 2002
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Date: Mon, 04 Mar 2002 12:12:26 -0800
Subject: Re: Unknown hosts on POP3
From: Michael Smith <mksmith@noanet.net>
To: FreeBSD Questions <freebsd-questions@freebsd.org>
Message-ID: <B8A9152A.45C6%mksmith@noanet.net>
In-Reply-To: <3.0.5.32.20020304132342.011ce1b8@mail.sage-one.net>
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You can't look up the IP address and resolve it to a name.

Server:  hydra.noanet.net
Address:  66.119.192.1

*** hydra.noanet.net can't find 213.156.144.200: Non-existent host/domain


Mike

On 3/4/02 11:23 AM, "Server Admin" <admin@sage-one.net> espoused:

> Recently configured sendmail and POP3 (qpopper). Seems to be working okay
> for the most part except the logs keep showing the errors below and
> wondered what more I need to do to configure things to eliminate the
> errors...??? I know the host (a friendly ISP) and he is using an email
> account on this server. Is it a reverse DNS problem perhaps? The same ocurs
> from another ISP he uses to access/send the mails. It's a couple of Russian
> ISPs that he uses and he is a member of our staff and a user on the
> server.... also, thought maybe his ISPs were blocking the reverse DNS...?
> 
> ...any ideas, please...??
> 
> Mar  4 03:06:56 sage-one popper[18931]: (v2.53) Unable to get canonical
> name of client 213.156.144.200: Unknown host
> Mar  4 06:46:24 sage-one popper[20033]: (v2.53) Unable to get canonical
> name of client 213.156.144.204: Unknown host
> Mar  4 07:45:38 sage-one popper[20308]: (v2.53) Unable to get canonical
> name of client 213.156.144.196: Unknown host
> Mar  4 08:42:40 sage-one popper[20594]: (v2.53) Unable to get canonical
> name of client 213.156.144.203: Unknown host
> 
> .... our website: http://www.sage-one.net/
> 
> Best regards,
> 
> Jack L. Stone
> Server Admin
> 
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