RiverRat wrote:Disable hyperlinks in the signature until a user has a certain number of posts...
ReCaptcha is not the default for PHPBB3, although the code has been changed as of 3.0.5 to allow for changing from the default to ReCaptcha. There is also an Anti-Bot Q&A mod available for 3.x.
Another effective mod appears to be SpamWords, it allows you to flag words and phrases to be blacklisted and posts that contain them are rejected.
Anti-Spam ACP Mod includes the SpamWords feature as well as a a couple other unique features for suspicious user logging and banning.
Last change would be to sanitize the footer code to remove all references to phpBB, since most spammers are using search engines to target sites running phpBB.
I have tried recaptcha in the past, it did not stop the registrations, which is why I think it's a human doing it.
I did have a "newly registered user" created, which limited people's abilities for the first few posts. I think I turned it off after new people kept complaining that they couldn't do anything. I will revisit that.
Good idea on the Spam stuff, I found a couple last night. I am going to try and add one that checks ip's and emails from known spammers during registration.
Good idea to remove the phpbb reference.