I'm running Exchange on a Dynamic ip address at my cable provider. I've read that I have to use my ISPs smtp server. I've been doing so for as long as I can remember, but the problem i'm having now is that my own external ip is listed in RBL. I thnink because mailheaders contain this ip I still get blocked by other mailservers.
Is there any way to work around this problem? Because I have to delist my ip everytim which is taking hours.