What do you do with daily spam?

[Robert9]

Every day, I get two new registrations with names like Itfvgrx, Jgds, Hgfvbgcc, Gzhvccb, Ggff, Hgtff, Jhcdxc; and they always use Hotmail addresses. I wanted to block Hotmail for a few days, but it didn’t seem to work. I need to take another look at it.

Do we have an add-on that can handle this, something like:If this crap comes in again, shut down the registration.

Sure, I can click it away twice a day, but who has the patience for that?
What do you do with daily spam?

free plugins
minecraft paid for free
mcmarket
mc-market
free minecraft paid plugins
free minecraft plugins
spigotmc
SpigotMC
aac free
ewg free
Minecraft Premium Plugins
ewg free download
litebans free
epicworldgenerator free
free schematics
leaked schematics minecraft
schematics
schematics leaked
schematics free
minecraft schematics free
paid minecraft schematics free
paid minecraft schematics for free
free cracked plugins
free cracked minecraft plugins
plugins
featherboard download
featherboard plugin download
antiaura download
xenforo leaked
xenforo for free
xenforo addons