Security check failed message

Comment on WordPress Comment SPAM by Erik.

Hi Dave, the past few weeks I have started getting emails from blog readers that they are seeing the “security check failed” warning and not being able to post the comment.

This has happened with at least one regular commenter who comments a lot, the other(s) may not be regular (to give you a number, I have been told about this 2-3 times the past few weeks, after never being notified by anyone before, and I’d assume that those are just the ones that are taking the trouble to tell me so there are probably more).

Is this warning message generated by Stallion’s additional spam protection, or is it WordPress? Just trying to determine where the issue might be originating.

Thanks,

Erik