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Date:      Thu, 20 May 2004 11:25:47 -0500
From:      Randy Rowe <rerowe@rerowe.com>
To:        "Omar M. Nafees" <omnafees@student.cs.uwaterloo.ca>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: sendmail problems
Message-ID:  <1085070347.2874.11.camel@work.rerowe.com>
In-Reply-To: <Pine.GSO.4.58.0405201040220.23098@student.cs.uwaterloo.ca>
References:  <Pine.GSO.4.58.0405201040220.23098@student.cs.uwaterloo.ca>

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On Thu, 2004-05-20 at 09:43, Omar M. Nafees wrote:
> Hello,
> 
> An 'mail loop back' error occurs whenever I send mail to myself. Here is
> the Mail Delivery report:
> 
> 
> The original message was received at Thu, 20 May 2004 10:40:00 -0400 (EDT)
> from localhost.uwaterloo.ca [127.0.0.1]
> 
>    ----- The following addresses had permanent fatal errors -----
> <root@hacker.cs.uwaterloo.ca>
>     (reason: 553 5.3.5 system config error)
> 
>    ----- Transcript of session follows -----
> 553 5.3.5 hacker.cs.uwaterloo.ca. config error: mail loops back to me (MX problem?)
> 554 5.3.5 Local configuration error
> 
>     [ Part 2: "Delivery Status" ]
> 
> Reporting-MTA: dns; hacker.cs
> Received-From-MTA: DNS; localhost.uwaterloo.ca
> Arrival-Date: Thu, 20 May 2004 10:40:00 -0400 (EDT)
> 
> Final-Recipient: RFC822; root@hacker.cs.uwaterloo.ca
> Action: failed
> Status: 5.3.5
> Diagnostic-Code: SMTP; 553 5.3.5 system config error
> Last-Attempt-Date: Thu, 20 May 2004 10:40:00 -0400 (EDT)
> 
> 
>     [ Part 3: "Included Message" ]
> 
> Date: Thu, 20 May 2004 10:39:59 -0400 (EDT)
> From: Charlie ROOT <root@hacker.cs.uwaterloo.ca>
> To: Charlie ROOT <root@hacker.cs.uwaterloo.ca>
> Subject: test
> 
> test
> 
> 
> **************************************************************
> 
> Any ideas as to what the 'local configuration error' could be? Where
> should I be looking?
> 
> 
> Thanks,
> Omar
> 
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An even better bet is that the local configuration error is in
/etc/hosts. I just ran across this when I moved a machine from one net
to another. Check your ip address settings for your host.



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