Mobile TCP is software for forwarding SMTP server connections to the correct server, made for people traveling with a laptop, connecting to different networks.
This program features the ability to check either external IP numbers (outside a firewall) or internal, and forwarding SMTP connections to the correct SMTP server. With this program it is easy to copy your current IP numbers to the clipboard, and the status window shows witch networks you have been connected to and when you sent e-mail. You can use the logfile option to save all the status messages and ignore the status of certain IP numbers. Mobile TCP can check your POP3 server for new e-mail and runs in the system tray for ease of use.