The Russians have heavily spamed my mybb forum

[Kelvinjw]

My forum http://forum.deviceteck.com gets tones of spam post from these Russians with invalid email addresses. The worse is that their post are highly inappropriate and irrelevant to my niche. I set my registration procedure in the setting to confirm email before a new member can post. How do I stop this?

Thanks

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[Ashley1]

Email verification is not enough, you need to set Admin activation.

[Zylantex]

If you don't expect legitimate signups from Russia, ban all Russian IPs from registering.

[CloudyBright]

Set the forum security questions to something that only your typical user would know the answer to.
If that's not enough, then start banning the ip addresses.

[Wires]

You may be able to use something like CloudFlare to filter countries.