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RE: [cobalt-users] Spam [Raq4r]



> I regulary receive emails sent to 
> Undisclosed.Recipients@xxxxxxxxxxxx and would like to block 
> this abuse from source. Could someone suggest a way of 
> stopping spammers using this abuse of our mail server? I have 
> created a modified sendmail.cf with filtering via ordb.org 
> but this doesn't stop the emails for undisclosed.recipients 
> and there are no users called that on the server?
> 
IIRC, all that means is the spammer left the To: field blank and used
Bcc:.
-- 
Dan Kriwitsky

 


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