>SIMS verifies what it can: that the claimed name resolves to the 
>connecting IP address.

But this is exactly the point. The claimed name (karabalta.kg) 
resolves to a private non-routable IP, which does not agree in any 
way with the connecting IP (195.38.186.2), and yet SIMS marked it as 
verified. And since the announced name of karabalta.kg is only a 
slight obfuscation of ns.karabalta.kg, I thought that SIMS might have 
done something more than a reverse lookup (since a reverse lookup 
fails) to finally give it a 'verified' mark.

This is all perhaps a nitpick but the example got me to wondering 
just how SIMS does things in this regard. Am I missing something 
obvious here?


>  Doing more (i.e a reverse lookup) is pointless really, since you 
>already know that an SMTP sender using that IP claims the name, so 
>checking for agreement from whoever does DNS for the reverse zone is 
>a pretty small return at best.

Understood :-) Thanks for the response.


Stefan Jeglinski

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