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Seeking SMTP MAIL Control of NOSUCHUSER?

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The Question is:

 
Hello wizards!
Context: OpenVMS V7.3-1, TCPIP V5.3 ECO 2
Question: Is there a way to suppress the non-delivery mail from the receiving
 SMTP system to a sender when there is NOSUCHUSER on the receiving system?
The reason for this are the masses of spam mail sent to a unsuspecting system,
 which tries to send back mails to the 'senders' for mails with no existing
 user on this system. These non-delivery-mails in in turn will very likely only
 clog the internet and
fill mailboxes of unsuspecting 'senders'.
Regards,
Thomas

The Answer is :

 
  No such mechanism is currently available, unfortunately.
 

  
     
     answer written or last revised on ( 24-NOV-2003 )
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