You should be sble to open it in any text editor or with your email program. It's just a text file.
Either smtp is set up improperly, you have the mailserver configured
improperly in wwf, or your isp is blocking traffic from port 25 to
prevent zombie spam relays.
This link will show you how to use telnet to test your localhost mail server...
http://support.microsoft.com/default.aspx?scid=kb;en-us;286421
If it fails, you need to review your smtp installation check services and make sure smtp is running - not just installed,
If smtp is running but the email doesn't get to the destination you
entered, your isp is likly to have blocked port 25 traffic. If you're
on cable in the US, it's a good bet that the port is blocked. SBC dsl
also blocks port 25 and I believe most of the other telco's block it as
well. Some will unblock it for you upon request. With others, you might
be able to get away with it by configuring your smtp server and the
cdosys component in WWF to use port 2525 instead
If your smtp server tests ok, verify your smtp server settings in
WWF admin. Use localhost for the smtp server. If that doesn't work, try
127.0.0.1
If you had tried sending before using your web or isp email adress, the
mail probably failed because it needed authetication (login/password)
for your email - like what you'd use in outlook. WWF 7.x doesn't
include authentication out of the box but a search of the forums for
cdosys authetication will uncover examples from people who added it for cdosys.