Spamming Back

Is there a site where you can post e-mail addresses for submission to spam bots? I recently had several (50 or so) “people” sign up to my forum, all bots with their e-mails at the same domain. It kind of pisses me off, is there any way to retaliate against them? Or like have a site where it will go through all of the possible combinations at a domain like [email protected] [email protected] [email protected] all the way through [email protected] etc. So that the spam bots will pick them all up?

[email protected]
* (you get the picture)