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bulkquery - A program by Brent Bice - 02/2002
Bulkquery is a multi-threaded program that makes a large number of
specific IP addresses against specific DNS based RBLs.
"Why bother?"
-I've been asked this several times. While running squirrelmail on a server
+I've been asked this several times. While running SquirrelMail on a server
with very little bandwidth and very high latency (a dial-up account - snicker)
I noticed that while my filters plugin was making gethostbyname() function
calls, my dial-up line was mostly idle. This was, apparently, because all
the DNS function calls were being made in series. Once a DNS query had been
-sent, no others were sent until a response had been received or until a
+sent, no others were sent until a response had been received or until a
certain timeout period had occurred. And some of the RBLs were quite a
bit faster than the others. This seemed pretty inefficient. "Why not make
more DNS queries while waiting for the replies," I thought.