13 Jan
2005
13 Jan
'05
2:51 p.m.
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".. ;)