From owner-freebsd-questions@FreeBSD.ORG  Tue Aug 14 09:40:36 2007
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From: "Narek Gharibyan" <ngharibyan@mail.ru>
To: "'Olivier Nicole'" <on@cs.ait.ac.th>
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Date: Tue, 14 Aug 2007 14:40:21 +0500
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Cc: questions@freebsd.org, freebsd-questions@freebsd.org
Subject: RE: My mail could not be delivered HELP
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My mail server has 2 static IPs. Just I use Dual view Domain RRs. Can that
be the cause? 

-----Original Message-----
From: owner-freebsd-questions@freebsd.org
[mailto:owner-freebsd-questions@freebsd.org] On Behalf Of Olivier Nicole
Sent: Tuesday, August 14, 2007 2:29 PM
To: ngharibyan@mail.ru
Cc: questions@freebsd.org; freebsd-questions@freebsd.org
Subject: Re: My mail could not be delivered HELP

> I could not send any mail to that mail server
> 
> Freebsd.org
> 
> But I could deliver mails to all other mail servers?
> 
>  Tue 2007-08-14 13:41:32: <-- 450 4.7.1 Client host rejected: cannot find
> your hostname, [91.103.27.98]  Tue 2007-08-14 13:41:32: --> RCPT
> To:<questions@freebsd.org>  Tue 2007-08-14 13:41:33: <-- 450 4.7.1 Client
> host rejected: cannot find your hostname, [91.103.27.98]  Tue 2007-08-14

The important part of the error message is the one above.

Many mail server only accept messages from machines that have a valid
rDNS reccord.

It looks like you are sending email from a machine with a dynamic IP,
that has no rDNS, so FreeBSD mailing listr server will not accept your
message.

Maybe you should try to send your email through your ISP mail gateway.

Best regards,

Olivier
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