Re: NTL and Free SMTP Server
You don't describe what problems you are having, so it is difficult to advise.
However, here are some reasons why it is not a good idea to run an SMTP server on a home PC:
1. Unless you know what an "SMTP open relay" is, and how to configure your SMTP server to prevent it being an open relay, then your SMTP server will be a danger to the whole community, and might result in the whole of NTL being black-listed and all outgoing mail from legitimate NTL users being rejected by other ISPs.
2. You will find, if you attempt to send e-mail from your private SMTP server, that many ISPs will simply silently discard your sent e-mails, or reject any attempt by your server to send them. This is because your home IP address is in a range that is known to be dynamically allocated to domestic users, and most such IP ranges are black-listed by many ISPs.
If you wish to send e-mail, simply send it using a normal e-mail client via smtp.ntlworld.com, then it will not be black-listed.