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Re: Last Call: draft-irtf-asrg-dnsbl (DNS Blacklists and Whitelists)

2008-11-11 11:35:10
There has been some debate in this forum on whether DNSxLs are an appropriate 
tools for stopping spam. Whether or not IP-based blocking is a philosophically 
appropriate method to use, every large scale ISP uses these lists as a first 
line defense against spam. DNSxLs are a much-used and effective tool in 
preventing the delivery of spam to the inbox and should be standardized to 
reduce the cost of implementation of anti-spam measures. The draft outlines the 
structure and functionality of DNSxLs, but does not dictate or require the use 
of them. Moreover, it is not the role of this draft to outline the policies for 
DNSxL listings and procedures for list management.

We at Cloudmark support draft-irtf-asrg-dnsbl-07 on the Standards Track and 
believe that standardization of DNSxL queries and response codes eliminates 
confusion, eases tool writing, aids email administrators, and reduces 
everyone's mail infrastructure operating cost.

---
Jamie Tomasello
Abuse Operations Manager
Cloudmark, Inc.

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