Rule to block spam accounts using gmail

I have some banned emails for the common spammers, but lately gmail spammers are filling the site with spam accounts.

Is there a rule to ban emails with some patterns?

I can't block gmail, but maybe there is a way to block email addresses using more than 2 periods in the name before the @.

Example:

Code:

j.ul.ia.al.lbe.str.ob.e.rt.ss@gmail.com

Hundreds of this register weekly, so the idea is to ban any gmail that has 2 or more periods before the @.

Possible?

Читать далее...