A few days ago I started noticing a high volume of registrations from the same domain. For the first couple days I didn’t think much of it. But after 25 registrations from the same domain I knew this was either a bot registering, or a spammer; most likely trying to create backlinks, etc. Follow the instructions below to install a nifty little plugin which will allow you to blacklist domains of your choice within WordPress.

Step 1

In WordPress, go to Plugins > Add New.

Step 2

Type User Domain Whitelist in the search box and hit “Search Plugins.”

Step 3

Click on Install Now.

Step 4

Under Settings click on User Domain Whitelist/Blacklist.

Step 5

Select blacklist and then choose the domains you want to blacklist. In our example we blacklisted o2.pl.

Step 6

See example of what happens when a user on that domain tries to register. You can change the error message they receive within the plugin.

Incoming search terms:

• o2 pl wordpress registrations
• blacklist domain wordpress
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• wordpress spam users o2 pl