> -----Original Message----- > From: Keith Moore [mailto:moore@xxxxxxxxxxxxxxxxxxxx] > > > Keith - I encourage you to consult with several very large > scale email domains around the world to see if they think > that DNSxBLs are useful, effective, and in widespread use or not. > > Jason - I encourage you to consult with users whose mail > isn't getting delivered, and see whether they think DNSBLs > are useful and effective, or whether their mail is > effectively being bounced by third parties who aren't > accountable for their actions. The buck ultimately stops with any mail admin (or user of any particular technology), not the DNSxLs and any other filtering tools they may choose to employ. As for consulting with users, you will find me (and my team) posting (and reading of course) almost daily on the Comcast section of BroadbandReports and our customer support forum's email section (http://forums.comcast.net). I could give you countless other examples of how I am my team works with senders and customers, and works to increase our transparency (such as http://postmaster.comcast.net). I work hard to be in touch with customers, and consider it a centrally important part of my job to understand how my team's use of technology affects our customers and other users on the Internet. Also, I am sure you would not be surprised to know there is a correlation betewen spam effectiveness and user satisfaction with email. Yes, there are always individual sender problems, but no matter the tool or technology you always have exceptional use cases that must be worked through. Regards Jason _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf