Default email address in sendmail?

[rlk at alum.mit.edu (Robert L Krawitz)]

   Date: Fri, 22 Sep 2006 09:48:19 -0400
   From: Matthew Valites <matthew.valites at webex.com>

   David Kramer wrote:
   > "It's for a friend..."
   >
   > Crusty old Solaris box running sendmail.  What he wants to do is
   > redirect all mail that doesn't have a user, and send it on to one
   > address, instead of rejecting it.
   >
   > How does he do it?

   First of all, this is a horrendous idea, and I can't think for one 
   minute of any justifiable reason that you'd want to do it.  That being 
   said, you could do the following:

I could think of a couple of reasons:

1) The person wants to actually see all misaddressed mail, just for
   safety's sake.

2) Rather than giving any clue at all to spammers about the existence
   or otherwise of the domain, he wants to capture inbound spam and
   feed it to a filter.

3) He's running a honeypot.

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