Zdravim
jde na me doméně pastvisko.cz nastavit toto:

If you’re familiar with adding DNS records, simply add the following SRV records to your domain.
_xmpp-server._tcp.pastvisko.cz. IN SRV 5 0 5269 xmpp-server.l.google.com.
_xmpp-server._tcp.pastvisko.cz. IN SRV 20 0 5269 xmpp-server1.l.google.com.
_xmpp-server._tcp.pastvisko.cz. IN SRV 20 0 5269 xmpp-server2.l.google.com.
_xmpp-server._tcp.pastvisko.cz. IN SRV 20 0 5269 xmpp-server3.l.google.com.
_xmpp-server._tcp.pastvisko.cz. IN SRV 20 0 5269 xmpp-server4.l.google.com.