On Monday, August 9, 2004, 3:37:56 PM, Jeff Chan wrote:
I thinking about dropping the TTL on the lists that had 6 and 8 hour TTLs down to 1 hour in order to get new entries active sooner. We have not tested this to see what effect it would have on traffic; an experiment we would still like to try with a range of different TTLs.
Does anyone have any objections to this? It would still be longer than the default 35 minute TTL that rbldnsd uses.
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.