The following reply was made to PR bin/32888; it has been noted by GNATS.

From: jnemeth@victoria.tc.ca (John Nemeth)
To: gnats-bugs@NetBSD.org, gnats-admin@NetBSD.org,
	netbsd-bugs@NetBSD.org, i18rabbit@cwazy.co.uk
Cc: 
Subject: Re: bin/32888: send-pr
Date: Fri, 24 Feb 2006 20:50:11 -0800

 On Jun 11, 12:22am, i18rabbit@cwazy.co.uk wrote:
 }
 } The following reply was made to PR bin/32888; it has been noted by GNATS.
 } 
 } From: i18rabbit@cwazy.co.uk
 } To: gnats-bugs@netbsd.org
 } Cc: 
 } Subject: Re: bin/32888: send-pr
 } Date: Fri, 24 Feb 2006 12:16:02 GMT
 } 
 }  >  }  >  }  it appears that gnats.netbsd.org rejects
 }  >  }  >  }  mail sent from NetBSD machines behind a
 }  >  }  >  }  proxy server (FreeBSD using ppp NAT).
 }  >  }  >  }
 }  >  }  >  }  gnats.netbsd.org doesn't accept the email
 }  >  }  >  }  because it can't lookup the local domain
 }  >  }  >  }  behind the proxy - but netbsd.org doesn't
 }  >  }  >  }  mind.  eg, if the proxy server is
 }  >  }  >  }  abc.mytelco.org, and i email from
 }  >  }  >  }  localmachine.abc.mytelco.org, it
 }  >  }  >  }  will bounce from gnats.netbsd.org
 }  >  }  >  }  because it can't do a reverse DNS
 }  >  }  >  }  lookup on that domain.  netbsd.org
 }  >  }  >  }  doesn't complain.  i don't think it
 }  >  }  >  }  is a local configuration problem, but
 }  >  }  >  }  more due to the fact that my ISP doesn't
 }  >  }  >  }  pass DNS requests down to my server.
 }  >  }  >
 }  >  }  >  It sounds like you are saying that you are sending mail out with a
 }  >  }  >  return address of a.x.y.z, where x.y.z exists in the public DNS, but
 }  >  }  >  a.x.y.z does not.  If so, then this is indeed a local configuration
 }  >  }  >  problem as you are sending e-mail out with an invalid return address.
 }  >  }  >  Look up masquerade in /usr/share/sendmail/README.
 }  >  }
 }  >  }  the first part of what you say is true, i am emailing
 }  >  }  from a host on a local network behind NAT stuff.
 }  > 
 }  >       The message will appear to come from the "NAT stuff".
 }  > 
 }  >  }  but i am not sending out email with an invalid return
 }  >  }  address.  if i was, how would i be getting this email?
 }  >  }
 }  >  }  all my local DNS works fine, and if it received a query
 }  >  }  for local machines behind the NAT server, it would
 }  >  }  respond correctly, but ISP's don't pass those queries
 }  >  }  down to their static IP customers typically.
 }  > 
 }  >       This really doesn't matter and it happens all the time.
 }  > 
 }  >       Do you have a sample of a message that bounced complete with all
 }  >  the headers?  This would greatly help in figuring out what is going
 }  >  on.
 }  
 }  i tried to send a test send-pr to get the headers,
 }  and something has changed now, the email did not
 }  bounce back.
 
      I have asked admins if any pertinent changes have been made and
 they say that there hasn't been any.  Given that nobody else has
 complained, it was most likely a problem on your end.  Since you can't
 reproduce the problem, there is really nothing more that we can do to
 try to solve it.  Is it okay to close the PR now?
 
 }-- End of excerpt from i18rabbit@cwazy.co.uk