is there anyway i can automatically kill a person who tries the mirc exploit on me. even if the dcc is blocked?

1. no
2. u can only notify ircop

wouldn't it be possible to just put the nick on Ignore or maybe use a program like nukenabber to close the port?

How do you now he isn't an IRC Op?

Also you could probably modify one of the exploit detection scripts that has been posted to automatically /kill the nick.