To create an SRV-record, first go to the technical settings of your domain name. You will see "Web settings", "E-mail settings" and "Others". An SRV-record can be created under "Others". To do so, first create a new subdomein which consists of the name of the service with an underscore in front of it (for example _sip or _autodiscover), a dot (".") and the name of the protocol again with an underscore in front (for example _tcp or _udp).:
And then fill out the newly created record as follows: