Might I ask why you are using MyDNS instead of the Tried and Trusted DNS server called BIND?
If you use BIND you can install the YAST DNS server module to mange it. Unless you have thousands of domain/sub-domains that change regulary or have some type of Dynamic DNS setup I wouldn’t recommend using software that integrates MySQL and DNS.
DNS and MySQL databases operate very differently from each other. DNS is not supposed to change that often; due to replication and what not. MySQL is designed to be fast response DB with data that frequently changes or gets added. If you change DNS records too much you roll for damage on DNS record coruption.
If you are looking to control the services listed then you can do that from YAST. You just have to search in Software Management for the yast modules. … . … Unless you’re are starting a web service of some kind.