XF 1.3.3 When the two following conditions are met: Akismet API key is set up in the Spam Management options A special user permission added for a user: Follow Message Moderation: Never The result is: All regular public posts go to moderation queue waiting for approval -- just like they should. Conversations messages cannot be posted at all, it gives the error: Your content can not be submitted. This is likely because your content is spam-like or contains inappropriate elements. Please change your content or try again later. If you still have problems, please contact an administrator. It's not Akismet giving a false positive, because: I tried posting several different private conversation messages, with unique content, and it every time gave the aforementioned error I removed the special user permission (i.e. set Follow Message Moderation: Not Set), but had Akismet still enabled, and the exact same private conversations went through fine When the two following conditions are met: Akismet API key removed from Spam Management A special user permission added for a user: Follow Message Moderation: Never The result is: Regular public posts go to moderation queue, just like they should, and the user can also post private conversations, just like they should. Can anyone reproduce, or is this just me?