I'm developing a asp.net MVC app that sends email for user registration, but I can't get IIS to send email. When I tested my code, it returns a "failure sending email". Here is what I have done so far
1. Installed SMTP tool in IIS 7 and make sure the service is running.
2. Created a test email and put it in inetpub\mailroot\pickup and the mail is sent and received fine.
3. I'm not sure what settings I should use in IIS. Should I use "localhost" as the smtp server and port 25? Under what circumstance do I have to use authentication?