[deleted]14 Feb 2015
I am using stopforumspam , reCaptcha , Honeypot for spam protection. However, I still receive the tone of spam daily. I checked the users account and most of the spam users are from @yahoo.com and @outlook.com. Yes, it include other mail, too. So, I decided to Ban by email address and I couldn't find the plugin for that.
I wrote myself for my forum.
You can download from https://github.com/saturngod/BanEmail
After enable the plugin , just put all the mail address with comma (,) that you want to ban.
Example : yahoo.com,outlook.com,freemail.ru
I hope, this plugin will useful for you , too.