[Wlug] problems with email to hotmail.com

I'm a Charter user, and something has changed between charter and hotmail so that I can no longer send email to hotmail.com accounts. I CAN send if I use Charter's web mail interface, but I much prefer to stick with pine. I suspect that the problem is that I'm behind a linksys router using private IP's and NAT. I've tried talking to Charter tech support, but they are worthless -- they just tell me that they only support Outlook email. I've tried configuring Pine so the it uses the Charter smtp server directly, but that doesn't seem to help, either. Right now, I'm using my local machine, and routing through Charter. Any ideas? TIA, Bill