But let's not pretend that they ever talked about PTR-based
I nor anybody pretended they talked about PTR-based filtering.
Len, you started this entire thread with quotes from the article and then "So ASTA members are suffering as much as the rest of us, and their recommendatin is to block networks that spew spam and infections from subscribe IPs direct to our MXs. Where have we heard this before? For those of you who refuse (or are technically unable ) to block subscriber networks by PTR hostname ..."
ASTA's current position paper is just plain _irrelevant_ to your ruleset
Pure BS. blocking networks by PTR (or any other method) is perfectly coherent with the ASTA position.
No, Len. As we keep saying, it is not. Saying it does not make it true. ASTA believes in being "A Good Neighbor" (their words). They say nothing about picking and choosing which ISP customers to block, based on misinformation (reverse DNS entries). They are professionals, and would follow a professional strategy, such as [1] Contacting the ISP and letting them know the blocking will occur if they do not fix the problem after X months, [2] if those months go by, contact the ISP and let them know the block is going to occur, and give the ISP the option of submitting dynamic IPs, [3] blocking just those dynamic IPs (unless problems are occurring with static IPs or the ISP mailservers as well).
They don't take a shotgun approach of "It's a ghetto! Let's block 'em all! Even the fire department!" The two main problems with the current approach are that [1] lots of static IPs get mixed in with the dynamic IPs, and [2] virtually all methods make it nearly impossible for static IPs to be removed. The only thing worse than false positives is not getting rid of them.
-Scott
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