I am new to all this, and I can send emails just fine, but when the person replies, or someone tries to email me, it is undeliverable, showing the following report:

Delivery to the following recipient failed permanently:

     info@prgroundworks.co.uk

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domainprgroundworks.co.uk by mx0.123-reg.co.uk. [94.136.40.150].

The error that the other server returned was:
550 This domain is not hosted here

Could you please offer me a solution?

Kind Regards,

Patrick