How to stop those spambots on my JSMF forum?

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[baijianpeng]

I am using the latest version of SMF v1.1.11 on my Joomla 1.0.15 website, integrated by JSMF bridge.

I noticed that from now and then, some spambots can intrude my forum and post annoying ads on each subforum.

Of course I had enabled CAPTCHA protection on SMF registration page. But it seems that these spambots can bypass the CAPTCHA image, because they did not have a valid Joomla user account, their username only exists on SMF forum.

I don't know how to stop them?

Could you please give me some help?

Thanks.

[locutus]

Two things come to mind:

• Is it possible to register in Joomla while registration in SMF is turned off
• Is the forum accessible via the bridge if you block the root folder of SMF with a .htaccess

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