On Tue, 2011-10-18 at 19:22 +0200, Karsten Bräckelmann wrote: > On Tue, 2011-10-18 at 12:51 +0100, Martin Gregorie wrote: > > I've just been thinking about URIBL lookups, etc and realising that I > > don't know how many of these an SA configuration does or how to estimate > > it. > > > > Is it correct to assume that every configured URIBL is sent a single > > lookup request for every message that SA scans? > > No. This message has no URIs, thus no lookup. > > Furthermore, since the BL lookups are DNS, each URI needs a lookup of > its own. The only thing safe to assume is, that with multiple aggregated > lists (or listings) per URI DNSBL, there is one DNS lookup per URI and > DNSBL -- e.g. SURBL (multiple lists) or URIBL (multiple listings). > > OK, so the answer is not straight forward: thanks for confirming it.
OTOH, a fairly regular occurrence on this list is thread from people who get problems from hitting usage limits set by various BL lookups. So, I wonder if it would be useful for SA to log the number of BL lookups it does: as it need only involve of writing a log message every hour or day giving the accumulated count for the period, its performance hit should be tiny and, of course, it should have an enable/disable configuration parameter. Output would be a single log message containing a total for all BL lookups or (deluxe version) a total for each configured BL. It goes without saying that, if this is incompatible with the SA internal structure, then forget about it. Martin
