alt Hacker News> you need something like actual malice--specific knowledge of falsity
IANAL, but as I understand it the definition of malice also includes "reckless disregard for the truth". I'm sure a good lawyer can argue that not having human lawyers review, investigate, and confirm computer-generated abuse reports before sending them to outsiders constitutes a reckless disregard for the truth.
A lawyer might argue that, but it's not going to be a compelling argument. Recklessness is generally a conscious disregard of the consequences; as applied to defamation-like claims, it's generally seen as "you specifically voiced doubts about the truth". Failing to vet automated abuse reports is going to be at best negligence (and I'm dubious of even that, because given the nonbinding nature of abuse reports, it's not clear there is even a duty to candor in abuse reports that one can be negligent of), absent internal complaints about "the accuracy of these things is total shit".