North American Network Operators Group

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Re: SMTP addresses in <>

  • From: Sean Donelan
  • Date: Fri Jan 04 11:47:54 2008


On Fri, 4 Jan 2008, Donald Stahl wrote:
RFC 1122 (Requirements for Internet Hosts - Communication Layers)
section 1.2.2 (Robustness Principle):

               "Be liberal in what you accept, and
                conservative in what you send"
Which has done nothing but allow countless Exchange server to HELO with exchange.local and other such idiocy, not to mention contribute to the spam problem.

Yep, which is why I suggest the modification:


   You may be liberal in what you accept, and you should always be
   conservative in what you send.