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29 Nov 2010
All effective spam filters use DNS blacklists or
blocklists, known as DNSBLs.
They provide an efficient way to publish sets of IP addresses from which the
publisher recommends that mail systems not accept mail.
A well run DNSBL can be very effective; the Spamhaus lists typically catch
upwards of 80% of incoming spam with a very low error rate.
DNSBLs take advantage of the existing DNS infrastructure to do fast,
A DNS lookup typically goes through three computers, like this:
See more ...
Stable link is https://www.jl.ly/Email/v6bl.html
17 Nov 2010
Last week I blogged about
Melaleuca v. Hansen, a CAN SPAM case that was recently
decided by an Idaho court.
This week, they're back with
a new case
that is almost identical to the last one.
Last time, the court decided, among other things, that Melaleuca
didn't have standing to sue because it contracts its mail service
to an ISP called IP Applications, the ISP assigned its CAN SPAM clains
to Melaleuca, but not until after filing suit, which the judge said
was too late. This time, the claims are assigned before the suit
started, so that particular defect is fixed, but all the other problems
with the suit remain, most notably the absurd 9th Circuit rule that
plaintiffs show specific harm from the specific messages they're
The only interesting bit of this case is the question whether the ISP
can assign its CAN SPAM claims to someone else, which I believe has
never come up before.
I fear this may be another Gordon, a case with lousy facts that
sets a precedent putting yet another needless hurdle in the way of
subsequent reasonable CAN SPAM cases.
Venkat has a longer take on this suit, with comments about the procedural
as well as substantive problems this suit has.
Stable link is https://www.jl.ly/Email/mela2.html
09 Nov 2010
Back on October 21 I found some bogus charges on my credit card bill.
So I called up the bank, had them taken off, and the bank changed
my card number.
They suggested I look at my credit report and put a fraud alert on it.
I went to annualcreditreport
(the only one of many similarly named sites that is legitimate), and got
my Equifax credit report.
See more ...
Stable link is https://www.jl.ly/Email/equispam.html
08 Nov 2010
The case Melaleuca v. Hansen has been moving slowly through Idaho federal
court since 2007.
On Sept 30 the court
decided in favor of the defendants.
Although the outcome is probably correct, the court's decision perpetuates
the misreading of CAN SPAM from the infamous Gordon case that makes
it in practice impossible to win a CAN SPAM case in the 9th Circuit.
See more ...
Stable link is https://www.jl.ly/Email/melaleuca.html
05 Nov 2010
A small company in suburban Philadelphia called
Holomaxx recently filed two lawsuits
against large webmail providers, complaining that they weren't delivering
mail from Holomaxx.
suit is against Microsoft and Return Path, and
suit is against Yahoo and Cisco/Ironport.
Neither is going anywhere.
See more ...
Stable link is https://www.jl.ly/Email/holomaxx.html
02 Nov 2010
post on the CAUCE website lays out the reasons that spam is
a real problem. It's not the annoyance of unwanted mail, it's the serious
crime of which that mail is only a part.
(Kudos to Neil Schwartzman and JD Falk for writing it so clearly.)
Stable link is https://www.jl.ly/Email/whyspamisbad.html
My other sites
Who is this guy?
Airline ticket info
Criminal Abuse of Domain Names: Bulk Registration and Contact Information Access
90 days ago
A keen grasp of the obvious
My high security debit card
397 days ago
Coalition Against Unsolicited Commercial E-mail
Network Abuse Clearinghouse