Nameservers, DNS records, and which one you need

These are two different things and mixing them up is the usual cause of a site that will not come up.

Nameservers decide which service answers DNS questions about your domain. They are set at the registrar. If you are hosting with us, point them at the nameservers shown on your hosting service, and DNS is then handled there.

DNS records — A, CNAME, MX, TXT — are the individual answers, and they live wherever your nameservers point. Changing an MX record to redirect mail means changing it at whichever service your nameservers name, not at the registrar.

Changes propagate. A nameserver change can take up to 24 hours to be visible everywhere. A record change within existing nameservers is usually much quicker, but still subject to the record's TTL.

If a change has not taken effect and you are sure you made it in the right place, check the TTL and wait it out before changing anything else. Changing more settings while the first change is still propagating is how a simple problem becomes a confusing one.