Jeff said:
OK I'm going to go ahead and reduce the TTLs on the zones to one hour. That's for all zones other than sc.surbl.org which has a 10 minute TTL. It includes multi also.
Let's watch name server traffic and see if it changes much as a result. Of course it's a little difficult to measure this now since SpamAssassin 3.0 is also rolling out with SURBL support. But if DNS traffic goes up too much we can back this off.
I'd still like to experiment with shorter and longer TTLs at some point to try to optimize them further.
Jeff C.
I goofed by replying to this, thus hijacking his sub-thread with another topic. Hopefully, Im repairing the damage here :) I would add that another interesting question is:
how many out there are using everything but multi in order to get catch more of the newer stuff faster?
If so, it seems to me that the combined extra lookups done on multiple surbl lists would be a larger strain on resources when compared to doing a single lookup on the multi list where the multi list has a shorter TTL time.
Follow? (I admit, I recently abandoned the multi list in favor of using ALL other lists for this very reason. I will now switch to two lists: multi & sc) Rob McEwen