My ClearOS won't update my dynamic DNS neither.
Previously in 5.2 I had this working like a charm, but since I'm on 6 the only way I've gotten the auto-update to work, is by restarting the system after my ISP gave me a new adres.
It doesn't detect IP updates automatically...
I read something about the heartbeat, but can't seem to find it in my logs.
Could anyone help me out here?