Can't receive emails

Can't receive emails

Hi, I just opened an account. I can send emails but can't receive.  I've reviewed the instructions re MX configuration and can't figure out what I've done wrong. Grateful if someone could help ASAP.

Technical details of permanent failure:

DNS Error: 124284296 DNS type 'mx' lookup of  lareoneartisans.com  responded with code NXDOMAIN
Domain name not found:  lareoneartisans.com