Blocking MX query

Jay Ashworth jra at
Tue Sep 4 19:26:39 UTC 2012

----- Original Message -----
> From: "William Herrin" <bill at>

> > SMTP Auth to *arbitrary remote domains' MX servers*? Am I missing
> > something, or are you?
> You are. You should be doing SMTP Auth to *your* email server on which
> you have an authorized account and then letting it relay your messages
> to the world.

Ah; so then the End-To-End Principle is *not* The Prime Directive.

Good; thanks.  Can we stop flogging people with it who like DNAT, then?

-- jra
Jay R. Ashworth                  Baylink                       jra at
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates         2000 Land Rover DII
St Petersburg FL USA               #natog                      +1 727 647 1274

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