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From Wiki.openrbl.org
blackholes.us
Warning:
those lists contain WHOLE countries, without exception.
Use only if you do not want any mail from there.
[edit] Listing
Blackholes.us does not list spammers, spam supporters, or vulernable hosts (open relays/proxies) at the present time. The data published here is not indended for use as any kind of anti-spam "solution," although it can be helpful as part of a larger system. If you are having difficulty with the delivery of mail, your best recourse is to contact the postmaster of the host using the data to reject messages.
