Recommended spam.lists and/or sendmail dnsbl settings?

[Scott Silva]

on 12/4/2007 5:57 PM Budi Febrianto spake the following:
> Scott Silva wrote:
>>> This is what I currently have in sendmail.mc
>>>
>>> FEATURE(`dnsbl',`sbl-xbl.spamhaus.org', `"554 Rejected " 
>>> $&{client_addr} " - see http://www.spamhaus.org/SBL/"')dnl
>>> FEATURE(`dnsbl', `dnsbl.njabl.org', `"554 Rejected " $&{client_addr} 
>>> " - see http://dnsbl.njabl.org/method.html"')dnl
>>> FEATURE(`dnsbl', `bl.spamcop.net',         `"554 Rejected " 
>>> $&{client_addr} " found in bl.spamcop.net"')dnl
>>> FEATURE(`dnsbl', `chinanet.blackholes.us', `"554 Rejected " 
>>> $&{client_addr} " found in chinanet.blackholes.us"')dnl
>>>
>>>
>>>
>> If you put your spamhaus lookups at the bottom, you will generate less 
>> traffic to them. The sendmail RBL lookups are serial and stop on the 
>> first positive.
> ah, so if I put zen.spamhaus.org at the bottom of the list, it will 
> reduce a lot of query to spamhaus, so I should be safe ( I hope so).
> I will put bl.spamcop.net at first, and  two or three others before 
> zen.spamhaus.org.
> 
Spamcop will probably catch a large portion, at least 60% or better.
You could also put cbl.abuseat.org before spamhaus, even if it is a double 
lookup, because that list is a significant portion of the zen list, and will 
cut lookups to zen even more.

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