Marc Perkel wrote: > > Peter Bowyer wrote: >> That's why DynaBlock, dynablock.njabl.org etc exist, and why people >> use them as part of their mail blocking strategy. >> >> >> > > Is dynablock.njabl.org the same thing as running DynaStop? > *heavy sigh*
others might retain... That, and dul.dnsbl.sorbs.net, and others, along with built-in forward/reverse lookup of Exim, will derive essentially the same information, but do so with *zero* extra code, and by a form of DNS lookup that is inherently cached - largely by the nearest nameservers if not by a bespoke DNS you add locally. You *will* need to whitelist carefully - not to pick up the social-misfit running a pirate MTA, but because a number of folks who should *know better* fail to keep their DNS in proper order - or think they need not. I include in such illustrious, or *notorious* company the world's oldest and most famous Golf Club, one of the world's largest domain.tld registrars, several major banks and brokerages, one of the world's largest accounting firms, alumni associations of *very* prestigious universities, and all manner of fellow-travelers. And those are just the ones we have had to manage here. So - neither rDNS fail, dynamic-IP RBL hits, nor munged HELO rejection are perfect. But far, far easier to auto/manually whitelist such few - or even few dozens of these as your individual user community actually need contact with, than to play silly-buggers with several quadrabrazillians of compromised WinWOES's boxen. Get it really right and you won't *need* SpamAssassin - just white/black/brown/grey... pink?.. *source* listing. Bill -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
