From what I understand, Spamhaus basically provides lists that identify known spammers, or known spam hosts. These lists are used for things like filtering out spam emails. So Spamhaus is basically saying that Cyberbunker is a host to spammers, and therefore email coming from the Cyberbunker's IP addresses should be treated as spam.
From what I understand, Spamhaus basically provides lists that identify known spammers, or known spam hosts. These lists are used for things like filtering out spam emails. So Spamhaus is basically saying that Cyberbunker is a host to spammers, and therefore email coming from the Cyberbunker's IP addresses should be treated as spam.