$451,000?!
I'm not a SORBS-hater, but I'd say that $451,000 seems a bit overpriced! How do they expect to ever get that level of investment back?
GFI Software has confirmed the purchase of sometimes controversial spam blocklist provider SORBS for a reported $451,000. Spam and Open Relay Blocking System (SORBS) has maintained a list of email servers suspected of sending or relaying spam since 2002. Inefficiencies in its spam blocklist database removal procedure, a …
SORBS has an ugly "fuck you" policy for spamlisting. I found myself inside one of their listed IP blocks, and found out that they do not honor or maintain any kind of blacklists. This of course means that the only way to get "unblocked" is to pay their $50 fine to unblock the entire netblock I reside in, or wait for SORBS to auto-delist the block. The first option would obviously not work, as whoever's actually spamming on said block will keep on spamming, and get the whole block to get listed again; and the second one, well, I doubt the spammers will cease to spam.
Thanks to this policy, I've discouraged SORBS whenever I can. In these days of colocation and IPv4 address shortages, I can't really decide on who's going to be my IP neighbor.