North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: question on ptr rr
> There are quite a few sites (including the freebsd.org mailserver, and, > on a case by case basis, even AOL) that do refuse mail from IPs without > rDNS, but turning on a "must have rDNS or you can't email us" setting > will definitely result in a non trivial amount of false positives. but, i suspect that more and more of the world will go that way, maybe slowly. so how does one judge when a site which hosts public lists can do so without causing serious discomfort for folk? is there some objective measure, or do we all just shoot in the dark? randy
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