Two queries/second/process should not kill a DNS server. A mail server with spam control can conservatively make dozens of calls per second. I get more hits from Comcast's new bot sniffer/port scanner than that. It looks like their DNS servers have dual duty... resolve dns requests and search for infected PCs.
That said, if you forward a lot of lookups to an outside DNS server, you might be nice and insert a dns cache (for example DJB's dnscache). Since spam bots tend to send LOTS of spam concurrently, it makes it that you only forward the request for the first one and your local cache returns results for the duplicate queries. Gary -- This message posted from opensolaris.org _______________________________________________ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
