Message-ID Header - is it essential for proper email flow?

  • From: Danny <nocmonkey@xxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Thu, 9 Sep 2004 16:40:51 -0400

Is the Message-ID header created by Exchange (using 2003 here) of any
importance for proper mail flow? I have a way to remove it at our mail
gateway for outbound (to external email addresses) emails.

This one:

Message-ID: <randomnumbersandletters@xxxxxxxxxxxxxxxx>

Thank you,


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