I hate to say I'm using a Microsoft product-- but I am. Pocket Outlook for my HP680 Jornada.
I have an slink debian system with qpopper on a local net at 192.168.0.1. It has a modem on it, which I connect to wih my Palmtop using PPP. The palmtop is assigned 192.168.0.69, and can do network stuff without a problem. I can get my mail just fine using outlook, but I have problems when I try to send mail. It gives me the (useful) error: "Unexpected SMTP error". I use netscape messenger mailbox from my win95 boxes located at 192.168.0.2 and 192.168.0.3 without problem. Any ideas would be greatly appreciated. --Mike