I have browsed over the first few pages of this forum and I haven't seen a discussion on this subject but if it has been discussed before, I apologize and please direct me the topics in question.
I am an admin for a 2500+ members phpBB forum and we have a real problem with spammers. How can we keep them away ?
Our list of blocked IPs is getting so large that I think we may be blocking whole countries ! And spammers have access to hundreds of proxies that they can use to work their way around IP blocking.
I have tried to set registration activation to "administrator" but we have tens of new registrations each day and it's a lot of work, plus I hate to make legit new members wait for up to one or two days when I am away and can't get my mail.
Right now, I have set registration activation to "user" so a valid e-mail has to be provided. But it's too easy to get a valid yahoo, hotmail or other e-mail address so that does not offer any efficient protection.
Is there any efficient way to keep spammers away ? Wouldn't it be possible to get and block the MAC address of a PC ? I mean, most PCs have an Ethernet card with a unique MAC address, don't they ? And it would be almost full proof ! Just a idea.