Here are a few links to sites that we hope you'll find useful and informative.
We can't guarantee or fully endorse the information on these sites, but
we've found many of them valuable.
Spam Prevention Early Warning System (SPEWS): http://www.spews.org/
Enter an IP number and see if the operators of this site have received spam from it. The depth and breadth of information here is amazing... and not just a little frightening. If there's a major spamming operation in existence, it's listed here, along with upstream providers, partners in crime, and more. An excellent resource for anyone trying to connect the spam dots.
Non-confirming Mailing List (NML): http://mail-abuse.org/nml
The site says it's "a database of
Internet Protocol addresses (IP addresses) which have been demonstrated
to be the sources of mailing lists which do not fully verify the email
addresses on their list. This means that they do not confirm that the
owner of the email address that is placed on their mailing list has,
in fact, granted their permission to be included on the mailing list."
...Excellent! This brand-new database could be a very valuable
resource as opt-out spam continues to become a larger threat.
Don Doumakes' site
on his experiences with spam sent via PacBell: http://pinkbell.net
From the site: "Pacific Bell Internet is friendly to spammers...
I've been receiving spam since November 2000 from cc-inc.com, a customer
of pbi.net. Unlike reputable Internet service providers, pbi.net tolerates
this violation of their own Acceptable Use Policy, as evidenced by their
letting it go on for months. Since the spammer is based in Torrance,
California, and does not mark the spam with 'ADV' in the header, this
is also a clear violation of the California Business and Professions
Code, Section 17538.4. If you're doing business with pbi.net, or planning
to do so in the future, I strongly suggest that you take your business
elsewhere. Don't take my word for it, look at the evidence...."
Need guidance for running a spam-free mailing
list? Take a look at these pages...
Looking for a blocking list? Here are a
few lists, plus links to extensive lists of other blocklists:
ex.dnsbl Domain-based blocklist compiled and used by DNS
providers. Can be used by DNS service providers and web hosts who want
to vet a client before signing a contract:
SPEWS' list of links to block lists:
Tired of Verio and its inability/unwillingness to terminate spammers?
Spamware vendor / supporter lists:
Misc. Links for Administrators
Anti-Spam Provisions in Sendmail 8.8 Information on how
to block spammers: