I found a list of domains here:
http://www.iana.org/gtld/gtld.htm

You would think that you could just put in a .* to keep it wide open, but I think I had problems when I tried that so I had to define each domain.

You'r not receiving mail on that server from outside, so you don't have to worry about incoming. All the traffic is from your WC application (or any other apps on that server).

>THANKS for the instructions on how to setup SMTP using IIS so I can email from WW.
>
>I will certainly do so.
>
>One question:
>step 11 -13 says to setup a domain to be able to SEND to. My site is a public site and I could get people to email to from ANY domain type (and I frequently get users I send email to from foreign countries).
>
>My site is a geneology site (free) and the email is to send a new user a short instruction note and their new ID.
>
>So I wil need to add ALL types of domains and I do not have any idea where (if possible) to find a list of all possible domains.
>
>THANKS
>Joel