Hi!

Setup a blacklist blocking ANY ip and you are ranked #1 in this test.
Its of no use at all IMHO.

Yes, certainly, and I guess it was a loaded question of me to ask,
because it was almost too obvious that I thought I was missing
something. I don't think it's _completely_ useless though, because the
two leaders are for the most part reputable and don't just block ANY
IP.

Raymond, I remember your name from reading at surbl.org (actually, you
must go to www.surbl.org, heh). Is this the list you recommend?

I dont recommend any list. Its up to anyone to pick and mix. Some list work for the other, some dont. My personal experience with the cuda list is not good. That doesnt mean it will work for others. That wasnt the story at all. You asked if this comparison is a benchmark, it is, but doesnt say anything about FP rating or effectiveness so its just a number. A rather useless number also IMHO.

I somewhat agree with the comment about barracuda being accountable,
but mxtools is apparently running the business side of things at
SURBL, and for large systems you need to pay, so I would assume they
want you to come back to renew.

Not interested to talk about that. You asked about comparison, not about pricing or surbl or mxtools or whatever. Please check my e-mail from thats used on the list. I post on personal title here. If you wanna post or talk to mxtools please try another list ;) Its offtopic.

I'm sure searching could probably eventually find something, but does
anyone know or have links that show the surbl and barracuda motivation
behind their service? Of course it is to block spam, but what does
barracuda expect to gain by making it free, for example, where surbl

Simple, to stop spam? For SURBL, the main reason was to help people out.
And we do that and have done that for allmost 8 years now.

We moved after giving away free service, and years of free time. Yes a blacklist doesnt compile just like that... That didnt turn out for the long term so we switched models. All is explained on different lists and if you like to know, check there. We basicly wanted to secure service level and existance for over time.

There is a lot of talks about Cuda, ask the people from Spamhaus or any some of the open source vendor who's code is used on the Cuda devices, on the SA list are enough people who can help you out with getting some clue whats going on. I wont poke around in that fire, you get burned easilly. So this is all you get ;)

An occasional FP is almost equally as subjective as anything else, and
a difficult metric in which to place any comparison value.

Would a more detailed and thorough comparison be any use? IOW, number
of changes per day, how many total entries, etc, or is everyone okay
with how it is currently?

Independent testing like the VB tests tell me much more.

http://www.virusbtn.com/virusbulletin/archive/2010/03/vb201003-vbspam-comparative

And yes that more or less the commercial products, but it shows also how lits like SURBL perform. But also ratings of the large vendors. And the FP levels.

Even the SA corpus, where we have a open ticket about the ratings isnt currently ok with rating. Score is calculated over time but domains expire. Its hard... retesting doesnt give a full solution for that either.

See:

https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6386

There is much more to do when rating things then just do some simple counting. The scoring in SA is done pretty well (compliments!) but even there are gaps and holes like pointed out.

So its certainly not something you can put aside in just a 5 mins talk.

bye,
Raymond.

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