[rbldnsd] rbl recommendation

[gelle at umich.edu]

On May 10, 2006, at 11:17 AM, Liebler, Justin wrote:

> Hi all,
>  
> I have been running the MAP RBL+ for about 5 years or so.  The only 
> thing that I have not liked about it was that it did not have an 
> rbldns format so I have to convert it once I transfer it, lots of 
> thanks to the people on this list for the help with that, but now that 
> trend micro has bought them they no longer want to support 
> transferring the zone from them they want to go to a query only 
> method.  We process well over 5 million messages per day so this does 
> not seem ideal to me as far as performance goes. 

Wow. I really didn't want to hear that.  We do about 8 million a day.  
Did they give you a date when they will be cutting off your XFERs for 
the RBL+?  I just had some fun with them yesterday--they sent us a 
notice that we were overdue despite the fact that we paid them in 
12/05.  I am assuming they at least have to let us finish our current 
contract under our current terms.  If they won't let us XFER there is a 
high likelihood we won't renew.  I must say they have hit on a genius 
business model.  Charge more for worse service and drive all your 
customers away.  TrendMicro also came to do a presentation for our spam 
software RFP  and comparatively I felt their solution was weak and 
feature-poor.

Right now I run a blended setup.  I just let the RBL+ XFER do its thing 
in bind and then I forward to port 54 for rbldnsd for spamhaus, rather 
than bother with conversion.  We have two dedicated servers for 
redundancy and the load on both is low.

We have set up our mailer so we can gather stats on individual lists, 
and we put spamhaus in front of RBL+ and now RBL+ only represents about 
22% of our blocks (stuff spamhaus missed) despite costing 20 times more 
and being on 5 continents and monitored 24 hours or whatever their 
spiel is.

I'd also be interested in any other lists that fall into the 
conservative category, particularly that would replace the MAPS DUL 
(lists dynamic addresses such as dial up pools, DSL and cable modem 
addresses).  MAPS works well for us in this respect as one of our 
largest local ISPs (comcast) is one of the ISPs that voluntarily listed 
their dynamic addresses so it helps keep down the volume of outlook 
address book virus mail.

gabi