is this an email attack attempt?

I got a mail by wordpress@then my website

with this content:

A new member has registered on your site ecovillage education:

Username: ronny

E-mail: dondy228@hotmail.com

but I do not have a member registration on that website.

What exactly does this mean? Do I have to inform anybody about it?

What exactly is the attempt behind it. Do I have to take preventive action?

thanks for any suggestions

michel