Configuring IIS to send mail from a form. -- This form cannot be configured to send results via e-mail.

See 'Configure the SMTP server in Internet Information Services' http://support.microsoft.com/?kbid=837851#3.

But take a look at this thread first, it may answer your question: https://www.experts-exchange.com/questions/21080095/Easiest-way-to-make-forms-in-FrontPage.html.

If that doesn't help, uninstalling and reinstalling the FP extensions might resolve the problem.

Thanks for your response.  I did see that posting earlier, but didn't have any success with it.  I also uninstalled the FPSE's on the web in question.  Unfortunately, I still see the "This form cannot be configured to send results via e-mail. The web site may be located at a disk-based location, or on a server that has not been configured to send email.  Contact your system administrator or Internet....  Would you like to remove the email recipient?" Message.  In the IIS manager, I still see the virtual SMTP server running just fine.

Also, in  http://support.microsoft.com/?kbid=837851#3, is this configuration for the IIS server running the web pages, or is this configuration for the exchange server?  In my environment, they're two different machines.

No, this would be for the IIS server, not the Exchange Server.

Unfortunately, I gave the information above a whirl, and it appears to configured correctly.  Any other suggestions?

Sorry, I haven't worked with the IIS SMTP much.  I generally use PHP for this sort of thing.

This error sometimes occurs if you're trying to send to an email address in an asp page.  This frontpage functionality only works with html pages.

Can you also advise what version of server extensions you are using on your IIS server - you might need to configure a default smtp server in your extensions to get it going (if my last post doesn't apply).

If it's 2002 you go into IIS management console, right click and browse the "Microsoft Sharepoint Administration" site,
click on "Administration" for the site you want,
click on "change configuration settings".  
You need to enter your smtp server address here or it won't know where to post to.

Success!  I managed to resolve this problem myself.  It was a combination of many things, mostly with the SMTP server settings and the wrong versions of FPSE.  I'll update with more detailed information as soon as I compile all of it.