Need help with SRV Record for Domain DNS.

[akai7]

Hello I need help with this domain thing, I want to do multiple website with different host. Run on Xampp-Apache.

Apache http-vhost:-

Listen: XX.XXX.XX.XX:81
<VirtualHost XX.XXX.XX.XX:81>
ServerAdmin [email protected]
DocumentRoot "C:\xampp\htdocs\rao"
</VirtualHost>

Domain DNS:-

Type Name Value TTL
A forum XX.XXX.XX.XX 1 Hour
SRV _http._tcp.forum 0 0 81 forum.domain.com 1 Hour
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I'm not sure if i made the setup right or not but whenever i enter "forum.domain.com" it will bring me to the port of 80 instead of 81.

I'm using Windows server 2012 as host and godady as domain.