Per the topic. We haven't changed the domain name pointers, though. The site is live on its old host and we're not ready to repoint the domain until we're sure that the version on Winhost is working. I've been testing the Winhost version by going to its IP address, and that works fine except when it comes to email. With email sends from asp.net, I set the SMTP server to the Winhost site's IP address, and that fails due to no response from the SMTP server. The credentials are passed in correctly with "email@example.com" as the username, and the correct password. So I assume that the SMTP server we should be using is not at the same IP as the site itself, which probably makes sense. But what should it be? Even if I end up using "mail.xxxxx.com" as the SMTP server in the send, won't that just use the MX record under the domain name? So we'll still need to know the IP address of the SMTP server. How do I find that out? Or does this not work the way I think it works?