I beg to differ. Spamhaus offers the PBL in rsync format for big enough sites and i'm sure that if the cost is somehow a major factor, you could have a proper public PBL registry. Do you see any big recipients (gmail/hotmail/yahoo/netease/etc) 'optimizing' by such a regex? no, you don't, and their performance requirements are much more stringent than yours. That could be a good indication you're cutting corners and having someone else pay the price for it.
Gil On Wed, Jun 15, 2016 at 9:48 AM, Noel Butler <noel.but...@ausics.net> wrote: > On 15/06/2016 16:09, Gil Bahat via mailop wrote: > > Prudency aside, this is one of the things wrong in the email world. I > don't get it why recipients do something which is patently lax (having a > naive regex) when a more appropriate solutions exist (spamhaus PBL) with a > 'screw the sender, it's their problem, they'll bear the wrath of their > users' - obviously allowing recipients to do this even for one of the > largest senders in the world (126/163/yeah.net with over 700m users!). > > > Its more about stopping spam, not just deliberate spam, but the > accidental, as in malware infected PC's , contacting DNSBL's uses network > resources, why take seconds when you can decide in nano seconds, no need to > keep throwing hardware at the problem, when you can cull it there and then, > our DNSBL's and anti spam-anti virus systems work 40% less through blocking > these types of hosts, since they are for the most part malware/virus > infected machines. > > In an ideal world all ISP's would block port 25 outbound except for > official mail servers and make users use submission port, that would go > along way to curbing the noise, but not eliminate it. > > -- > If you have the urge to reply to all rather than reply to list, you best > first read http://members.ausics.net/qwerty/ > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop > >
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