The SRV record allows customers to access a specific service on the web, located on a certain host or accessible only on a specific port.
SRV record setup
You can set up the SVR record in your customer profile, if you are using a DNS hosting for your domain.
You can set up the SVR record through the Advanced DNS editor in cPanel in case you have set up the name servers for a specific hosting.
SRV record format
service - the name of the services, for example _sip., _caldav., etc.; the service names and their assigned ports are standardized; full list is available at IANA: Service Name and Transport Protocol Port Number Registry.
proto - the transport protocol – usually either TCP or UDP;
name - the domain name, ending in a dot (".");
TTL - standard DNS refresh time;
priority - similar to the priority for MX records, lower value means a higher priority;
weight - relative weight for records with the same priority, higher value means higher priority;
port - TCP or UDP port where the service can be found;
target - the host name of the server, providing the service, ending in a dot ("."); there should be an A record created that points to the
server providing the service.
A few examples of SRV records for specific services:
_sip._tls.domain.com. 3600 100 1 443 sipdir.online.lync.com.
_sipfederationtls._tcp.domain.com. 3600 100 1 5061 sipfed.online.lync.com.
Minecraft - game server
_minecraft._tcp.domain.com. 3600 0 5 25565 minecraft.domain.com.