My blog is hosted on a shared Windows web server running IIS. My web host does not support WordPress’ ability to send e-mails as notifications without a modification. This problem occurs in WordPress 2.3, and WordPress 2.5, but may occur in other versions.
Thankfully, there’s a simple fix without requiring any modification of source code.
To enable e-mail notifications, I downloaded this plug-in:
WP-Mail-SMTP (download here)
Once you’ve enabled the Plug-in, you’ll find the Email settings here:
then
Then, provide the needed information and click the Update Options button. Use the Test Email form to make sure everything works.