Waxy.org is the sandbox of Phil just came up with a clever variation of Andre's spambot-defeating e-mail trick. On his old site, Andre dynamically displayed the current date as his contact e-mail address (a la 04162002@example.com), and wrote a procmail script to weed out e-mails sent to addresses older than a week.
Instead, use SSI and environment variables to include the client's IP address in the e-mail address. So, <!--#echo var="REMOTE_ADDR" -->@example.com becomes 38.107.191.84@example.com. Now that you have the spambot's IP address, do something creative with it.
8:45 PM
I think what I'd do is use a procmail script that does a dns lookup on the IP in question, and forwards a copy of the spam to root, abuse, webmaster, and postmaster @ both the ip address in question and the host/isp/etc determined during the lookup. I imagine most would be ignored, but if the generated email was well worded, maybe 1 in 100 would nab someone and get their account suspended/removed, and that would be good enough for me :)
11:13 PM
Yeah, but how would you know which incoming e-mails were spam and which were from unsuspecting people who thought you had a bizarre e-mail address?
8:15 AM
well, if integrated w/ spam assassin, the emails would be passed to the script only if they pass the spam assassin test.
9:31 AM
So if Spam Assassin flags it as spam, add the IP address in the e-mail address to the ban list. Neat.
3:20 PM
This might be of interest, if you've not seen it already: Address Munging.
1:08 PM
Hahaha, did you just pull that IP out of the air? It's mine! lol. I was here looking for the backlinks script and got sidetracked... :P
1:28 AM
string1="my.address"
string2="@mydomain.com"
myemail=string1+string2
Implemented in your fave language. Just as long as the complete string is never quoted in full on the page, then the trawlers never get it.
Whaddevva.
11:03 AM
I really want to know I could get use the spambots. It is interesting to know how it works. Just educative.