If you use Spamcop, you have probably been removed from any OpenNMS mailing lists, as they decided that Sourceforge was a spammer and bounced any e-mails that were sent.
You will not be able to receive Sourceforge mailing list mail for at least 21 hours (unless they get their act together and delist them sooner), but afterward please feel free to resubscribe. You should be able to check to see when Spamcrap has decided that Sourceforge is okay.
I know spam is bad. I hate spam. I get at least a hundred messages a day that make it past my filter, but acting like torch wielding villagers and automatically shutting down all traffic from a particular IP address is not the way to solve the problem.