try this :

Code

ON *:join:#channel:{ 
  var %badmatch 1 
  while (%badmatch <= $lines(myblacklist.txt)) {
    if ($read(myblacklist.txt, %badmatch) iswm $address($nick,5) ) { 
      putmode -t0 $chan +b $v1 
      kick $chan $nick YOU'RE IN BLACKLIST !!!
    } 
    inc %badmatch
  } 
}