Steve,
From the Junkmail Manual:
To blacklist a range of IPs, you can use CIDR style IP ranges. For
example, 127.0.0.0/8 would blacklist all addresses from 127.0.0.0
through 127.255.255.255. 127.0.0.0/24 would blacklist the Class C
range from 127.0.0.0 through 127.0.0.255.
George Kulman
Scott has a nifty tool for this. Plug one of the numbers from the range into this URL
as shown:
http://www.dnsstuff.com/tools/cidr.ch?ip=64.49.243.63
and a list appears. There are 2 columns seperated by the word through. On the left
side of the word is the lower # of the range and on the
