Margie Arbon wrote:
.......
> IMO, there is as much, if not more, danger in "censoring" mail
> with contect filters - particularly the "black box" types.
You are, of course, correct. As you acknowledge, there is a
danger that DNSBLs will be used to "censor" traffic on the net -- one
may argue whether this danger is greater or less than the danger of
censorship that is presented by content filters, nonetheless, it is
important to acknowledge that the danger exists. Just as the dangers of
content filters have been discussed in this group, it is appropriate
that we should discuss the danger of censorship that can come from
DNSBLS.
This danger would apply to many other anti-spam technologies. It seems that
this more of a policy issue with specific parties operating the DNSBLs and
other tools, rather than a technical one. The various issues of how a
specific tool operates, how its data is collected, whether its operations
are audited, etc. are very important and should mentioned in a BCP for
anti-spam tool developers.