I'm not sure how much of an impact the RBL lookups have in terms of processing, but I'm thinking this is very small compared to the rest. If Declude doesn't yet do this, performance here could be improved by only querying an RBL once regardless of the code that you are looking for, so for instance, only one lookup would cover all of the SORBS tests, and then the code returned could be applied to each test defined for that one address. You would need to use the same domain though for all the SORBS tests instead of the different ones that they provide. Declude might also already do this???
Yes, Declude already does this. Early versions would run the tests separately, but for quite some time now if there are 2 DNS-based spam tests that use the same zone (such as SORBS-SPAM and SORBS-DUHL), only one query will be made.
-Scott
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