What Are Catch-All E-mail Addresses?
Catch-All e-mail accounts accept all incomming e-mails for your domain that do not have a valid address. For example: anything@yourdomain.com would be set-up and all e-mail received at your domain would go to your catch-all account e.g. info@yourdomain.com, sales@yourdomain.com, webmaster@yourdomain.com, etc.
You can have a single catch-all account for each hosting account/domain that you own.