It should be possible to use the SMTP server provided by your ISP. This should deliver any mail submitted from a computer with an IP address within their own range. The name for you ISP's SMTP server will usually be detailed somewhere in their online FAQ (crazy thought: phone them up and ask them). If you can't get any joy there, just try 'mail' followed by the domain name for the ISP, e.g. if your ISP is yourisp.net, the SMTP server will most likely be mail.yourisp.net. If this doesn't work try smtp.yourisp.net and mx.yourisp.net. You don't have to do all this on your 323 - just use the ping command on the command line to verify that the name resolves before you bang it into your 323. If none of these names resolve, use the nslookup command on the command line to determine the correct SMTP server for your ISP domain (enter "set type=MX" as the first command, followed by "yourisp.net" as the second).