MX and SPF,DKIM Text record record configuration

dears,

I will configure F5 DNS with license LTM and GTM and I will use it to make  Link controller functions, 

I will configure WIP for the GTM Virtual server with A record type, and I will delete all A records from the DNS service provider, and I will add an NS record with the IP of GTM Listener, 

my question here, how I can add mx and SPF, DKIM records as I will delete all our records from the service provider