>Does any one know if I need to use another mail server to make the >outgoing mail?
Yes
All the information you require is in the tf Admin Guide pdf under Spider Beta Wares.
This goes basically something like.
1) Select "Server Identity" command from Server menu and add your local domain(s) that you wish to have Mail Server receive mail for.
2) Select "Gateways" command from Server Menu and add a SMTP Gateway set this as your default Gateway, select Outgoing Domain to use, click options and enter your providers SMTP Server address (Phone him and ask he's a nice guy really (-:) click OK. Do not Add Domains or this will be the only domain(s) you can use this gateway for, its a cool feature that you can read about later.
3) Make sure your provider is sending SMTP to the IP address of your Macintosh or if you are using Vicom Gateway or such make sure SMTP is redirected to the MailServer.
This will get E-Mail both into your BBS and out if your clients wish to use POP3 the you will have to do some more configuration.