[Mimedefang] Off Topic: Refuse Null Sender

[Jason Bertoch]

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On Tuesday, July 03, 2007 1:21 PM David F. Skoll wrote:


> Some auto-responders (eg, Sendmail's "vacation") can be configured to
> set the envelope sender to <>.
> 
> You should never get backscatter if someone sends as <>.  That's the
> whole point of the null sender: To avoid responses, even error
> replies. 
> 

The backscatter I had in mind was from mail servers on my network completely
capable of delivering mail/bounces/list traffic themselves but, instead, are
relaying through mine.  However, that was the least of my intent.  What I was
really hoping to stop is what seems to be the biggest outbound spam issue I
face, without running SA.



Jason A. Bertoch
Network Administrator
jason at electronet.net
ElectroNet Intermedia Consulting
3411 Capital Medical Blvd.
Tallahassee, FL 32308
(V) 850.222.0229 (F) 850.222.8771
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