North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Security of DNSBL spam block systems
On Tue, Jul 23, 2002 at 10:20:58PM +0200, Brad Knowles wrote: > > At 2:29 AM -0400 2002/07/23, Phil Rosenthal wrote: > > > IMHO Even the really large DNSBL's are barely used -- I think > > (much) less than 5% of total human mail recipients are behind > > a mailserver that uses one... > > Not true. There are plenty of large sites that use them (e.g., > AOL), and many sites use them to help ensure that they themselves > don't get added to the black lists. > Is true.. those "large sites" still account for an infinitely small percentage of the net. > IMO, there is a serious risk of having DNSBL servers attacked and > used as a DoS. Yes, there is a risk but the exposure is negligble if it does occur. I'm all for anti-spam measures but unless they're universally adopted and the world governments start putting spammers out of business, these anti-spam blacklists are more of an annoyance operated by a radical fringe of the net. I get 500-600 pieces of spam a day, and there is nothing I can do about it. This topic has also been discussed to death before, the potential for a DoS atatck is patently obvious to everyone. [snipped] (I also trimmed the Cc list) Attachment:
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