Blocking of countries seems to be working well. Thank you again to Joe and Tony and the other folks who have responded to this thread.
I am still getting hammered hard by spam from *.in.net:
dumarram.in.net
chinambe.in.net
nve9.in.net
urd9.in.net
cleonsigion.in.net
hophember.in.net
kpd8.in.net
df7t.in.net
ameryucke.in.net
nd3b.in.net
hourenry.in.net
fn3m.in.net
And these guys are spammers from within the US. Any ideas about how I can block these guys?
Thank you again for your help.
Eric