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Re: Mandatory From field, anonymity, and hacks

2004-07-31 13:45:00

Charles Lindsey wrote:

On Fri, 30 Jul 2004 14:38:43 -0400, Keith Moore 
<moore(_at_)cs(_dot_)utk(_dot_)edu> wrote:

that doesn't do a thing to keep the root servers from getting hit.

It does if user agents that receive ill-considered requests to send
mail  to such addresses recognize that particular case and don't waste
time  looking it up.

That is exactly the sort of heuristic, based on a mere convention that
RFC 3696 cautions against.  Suppose RFC 2606 is superseded by another
RFC that changes ".invalid" to ".undefined", and permits ".invalid"
to become a valid TLD; what happens to implementations with hard-coded
checks for ".invalid"?

OTOH, glad to see that you recognize that use of ".invalid" in an
address field is "ill-considered".

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