SRV-Entry doesn't work

I have the following problem: I wanted to create a subdomain which leads to my Webspace. Normally I need to open my Web with IP:Port. Now I created an SRV Entry with port, but I still can't reach the webspace with panel.smashcraft.de. The Subdomain should just lead to the default page, so I don't need to configure it in the Apache2 config.(I've also tried it with the main domain). I also waited 24 hours. Can you help me? Edit: To open the Default Webpage I still need to put the port behind the domain. Otherwise it dosen't work