Teergrub / stuttering httpd?
With e-mail, there's the concept of "teergrubing," where your mailserver will respond very slowly -- it basically "stutters" to the remote host, sending just a few characters a second. This is done when the server realizes it's handling obvious spam; the goal is to slow their spamming to a crawl by making them wait for an eternity.
Has anyone tried to get a webserver to do this? I've got a few filters for my blog that detect the obvious comment spam. Currently, on detecting obvious spam, all they do is give them an error and fail to post the comment. Could I instead throw them a redirect to a webserver running on another IP on my box, which will respond (ideally with a very large page) extremely slowly?
Does software exist to do this? And, if not, can I set rate-limiting (mod_bandwidth, or something like thttpd) up in the 1B/sec range, or will it not go that low? (My other concern here is that I'll often get a "flood" of obvious spam all at once; I don't want this process to end up wasting too much of my resources.)
Thoughts, anyone?
