Difference between revisions of "Postfix bounces for nonexistent users"

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[[Category:Computers]]
 
[[Category:Computers]]
 
[[Category:Postfix]]
 
[[Category:Postfix]]
<pre>
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&lt;pre&gt;
 
Message: 1
 
Message: 1
 
Date: Fri, 16 Dec 2005 09:37:13 -0800
 
Date: Fri, 16 Dec 2005 09:37:13 -0800
From: Wil Cooley <wcooley@nakedape.cc>
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From: Wil Cooley &lt;wcooley@nakedape.cc&gt;
 
Subject: Re: [PLUG] postfix question:  discarding mail to nonexistent
 
Subject: Re: [PLUG] postfix question:  discarding mail to nonexistent
 
users
 
users
 
To: plug@lists.pdxlinux.org
 
To: plug@lists.pdxlinux.org
Message-ID: <1134754633.24128.13.camel@willow.odshp.com>
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Message-ID: &lt;1134754633.24128.13.camel@willow.odshp.com&gt;
Content-Type: text/plain; charset="us-ascii"
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Content-Type: text/plain; charset=&quot;us-ascii&quot;
  
 
On Thu, 2005-12-15 at 09:27 -0800, Keith Lofstrom wrote:
 
On Thu, 2005-12-15 at 09:27 -0800, Keith Lofstrom wrote:
  
>> I cannot find a parameter in postfix for turning off bounces for
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&gt;&gt; I cannot find a parameter in postfix for turning off bounces for
>> non-existent users.  If a spammer sends my server a mail to a
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&gt;&gt; non-existent users.  If a spammer sends my server a mail to a
>> non-existent user, with a fraudulent return address, postfix  
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&gt;&gt; non-existent user, with a fraudulent return address, postfix  
>> sends a "no such user" message to the return address.  While this
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&gt;&gt; sends a &quot;no such user&quot; message to the return address.  While this
>> is probably called for by RFCs, it is not productive behavior  
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&gt;&gt; is probably called for by RFCs, it is not productive behavior  
>> these days.  Just the mail logs are noting this is occuring are
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&gt;&gt; these days.  Just the mail logs are noting this is occuring are
>> getting up to 100MB a week.  
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&gt;&gt; getting up to 100MB a week.  
  
  
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Wil
 
Wil
-- Wil Cooley <wcooley@nakedape.cc> Naked Ape Consulting, Ltd
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-- Wil Cooley &lt;wcooley@nakedape.cc&gt; Naked Ape Consulting, Ltd
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&lt;/pre&gt;

Revision as of 03:27, 24 November 2010

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<pre> Message: 1 Date: Fri, 16 Dec 2005 09:37:13 -0800 From: Wil Cooley <wcooley@nakedape.cc> Subject: Re: [PLUG] postfix question: discarding mail to nonexistent users To: plug@lists.pdxlinux.org Message-ID: <1134754633.24128.13.camel@willow.odshp.com> Content-Type: text/plain; charset="us-ascii"

On Thu, 2005-12-15 at 09:27 -0800, Keith Lofstrom wrote:

>> I cannot find a parameter in postfix for turning off bounces for >> non-existent users. If a spammer sends my server a mail to a >> non-existent user, with a fraudulent return address, postfix >> sends a "no such user" message to the return address. While this >> is probably called for by RFCs, it is not productive behavior >> these days. Just the mail logs are noting this is occuring are >> getting up to 100MB a week.


Try 'local_recipient_maps'; this will reject messages for unknown local recipients during the SMTP session, which is even less overhead than accepting-and-not-bouncing and without the side-effect of violating RFCs.

Wil -- Wil Cooley <wcooley@nakedape.cc> Naked Ape Consulting, Ltd </pre>