[aclug-L] Re: Using RBL on Email server

[Chris Owen <owenc@xxxxxxxxxx>]

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On Jan 22, 2008, at 8:53 AM, Jonathan Hall wrote:

> URIBL is also a great content-based RBL to use (it's a blacklist of  
> URLs
> found in email content).  SpamAssassin 3.2 (and maybe 3.1) has a  
> plugin
> to use it.  I highly recommend using it!  When we have clients call  
> and
> complain that they're getting too much spam, 9 times out of 10, it's
> because their URIBL SA plugin isn't working properly (usually due to
> broken DNS).


After greylisting URIBL is by far the most effective thing we've  
found.  For instance yesterday:

63.51% of all mail was on the URIBL, which was 83.70% of all messages  
marked as spam.

What's also nice about URIBL is that since they are pretty fast about  
listing new URLs, we actually use it in place of where we just to keep  
local blacklists.  We can submit a URL to it instead of a local  
blacklist and still have it show up in the next 10-15 minutes or so  
(we cheat a little bit because we're a URIBL DNS mirror but still its  
pretty quick).

Chris

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chris Owen         ~ Garden City (620) 275-1900 ~  Lottery (noun):
President          ~ Wichita     (316) 858-3000 ~    A stupidity tax
Hubris Communications Inc      www.hubris.net
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



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