Hi,

After reading I understand that in order to use DDNS without transferring the TLD I have to set up the following name servers:

NS1.DYNU.COM
NS2.DYNU.COM
NS3.DYNU.COM
NS4.DYNU.COM
NS5.DYNU.COM

Shall I also remove current NS in current provider?

What happens with current MX and A records that need to point to current hosting provider? Shall I have to add those records manually in dynu?

Thanks a lot,

Yes, you may first add the A and MX record in the control panel and then change the name servers for your domain name to Dynu name servers.