I'm sure I'm doing something stupid, but can someone tell me what?  When I try to test my new form I get an error "<!--StartFragment --> The SMTP host was not specified. "  My smtp is set up OK in the the opt in email module elsewhere on the site, so where do I need to go to fix this?

First step is to verify that you can do a Test Email from the Host Settings page.

Sorry Form Master uses the settings in the Host Settings page to send email.

This is a Best Practice method in DNN for sending email.

It really does not matter what another module can do.

If that is not working, email will never be sent. Try doing a password reminder -- won't work.