phranque - 3:44 pm on Sep 14, 2012 (gmt 0)
is it the blocklist lookup on uceprotect?
if so that's about email spam.
sorbs.net is also about email spam, not web spam.
when an IP gets blocked for email spam it is usually that the server is vulnerable, not that the server admin or webmasters on that IP are necessarily spammers.
i would look at these as reasons to conduct further discovery on that IP since a server admin that leaves an open smtp relay may also allow or have exposure to malware and spam on the web server.