The problem is that user(_at_)ai is not globally unique.
MIT users will have problems talk to user(_at_)ai when "ai" means
Anguilla. The is a current security issue.
If / when MIT stop using ai.mit.edu, "user(_at_)ai" will not longer
mean user(_at_)ai(_dot_)mit(_dot_)edu(_dot_) This will mean that any
configuration file
that has "user(_at_)ai" will now, suddenly, get a different meaning.
This is a latent security issue.
If by "latent" you mean "so obscure that in the ten years that there's
been A and MX records at TLDs nobody's been affected" I guess I agree.
Again you are asserting that no one has ever been effected.
By latent, I mean it will cause problems in the future when the
conditions described are met.
Not every action has a immediate consequence. Some consequences
can happen years after the initial action was taken.
The consequences here are foreseeable but not necessarially
obvious to everyone affected.
Mark
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews(_at_)isc(_dot_)org
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