If you wanted to block, say, 127.0.0.* you would enter it like so (and I hope the backslashes come out):
Text Formatted Code
^127\.0\.0\..*
That's an ugly regexp
The CVS version of the Spam-X plugin actually accepts IP ranges now, so that you could enter the above as either 127.0.0.0-127.0.0.255 or as 127.0.0.0/24. I'll have to backport that to 1.4.1 on occasion ...
bye, Dirk