[77123] in North American Network Operators' Group
Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of "anonym
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Thu Jan 13 14:52:06 2005
To: Owen DeLong <owen@delong.com>
Cc: Stephane Bortzmeyer <bortzmeyer@nic.fr>, nanog@merit.edu
In-Reply-To: Your message of "Thu, 13 Jan 2005 11:35:23 PST."
<2147483647.1105616123@imac-en0.delong.sj.ca.us>
From: Valdis.Kletnieks@vt.edu
Date: Thu, 13 Jan 2005 14:51:25 -0500
Errors-To: owner-nanog-outgoing@merit.edu
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On Thu, 13 Jan 2005 11:35:23 PST, Owen DeLong said:
> >> Requesting rDNS means "I don't want to receive email from Africa".
> >
> > Having an rDNS entry for a host doesn't mean you know if it is/isn't in
> > Africa, to any higher degree of certainty than when you just had the IP
> > address.
>
> What he was pointing out her is that a majority of African ISPs do not even
> have the ability to assign rDNS to their address space.
Ahh.. I've had so many people of late say words to the effect of "I want rDNS
so I can implement blocking <geographical>" that I didn't realize what he
meant was "Implementing it means an Africa-shaped projectile wound in your foot".. ;)
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