Can't detect my RDP server on MTA servers list

[^B00M..!]

I've installed MTA server on RDP and started "MTA Server.exe", it says the server started and is ready to accept connections but I can't connect to the server!

[androksi]

Hello and welcome to the forums.

Type openports in your Server Console and check if the ports are open. If they do, also make sure that your MTA Server is allowed by the firewall.

[^B00M..!]

Didn't work, allowed every port but it  still closed

[vx200]

Have you opened the 22126 port? It's a UDP port.