I used to be able to access things like my ftp and http servers by hitting http://my.dynamicdomain.com internally... without the need for entering my internal IP.
I recently switched routers, having done so, I can only access my servers by entering their internal IP when on the LAN. This is ok, but not ideal, for instance I run SubSonic on my iPhone and the server is set to my Dynamic URL; http://my.dynamicdomain.com - internally it's not connecting, though outside of my LAN it's working fine.
Bit of a pain...
What am I missing...