FrontPage Error when submitting forms that send email

All of the forms on any hosted site on one of our servers now produces an error "FrontPage Error.  User: please report details to this site's webmaster. Webmaster: please see the server's application event log for more details."

Unfortunately, there's nothing in the application event log that corresponds with these errors.  They seem to be email related because if I remove the email option then they display the confirmation page and save the data to the database file properly.

How can I find out where/why sending the e-mail is making it fail?  I can't think of any changes on our mail server that would keep it from connecting and sending.  And I don't think it's DNS related because on the server config page for we have it set to the IP address of the mail server in the SMTP settings.
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I had this same error while trying to transfer my company's website from a machine with IIS 5.0 to IIS 6.0 , in fact that is why I subscribed to this site in the first place, I was never able to find a solution. I do know that it has something to do with the Frontpage server Extensions 2002. They have a new web based interface and for me they just didn't work. I ended up having to switch it back to IIS 5.0.  

I am assuming that you are running IIS 6.0 on a Windows 2003 machine and that the website you are trying to get to work has some sort of submit button on it that is tied to a mailto: command.

I would research installing Front Page 2002 Extensions on Exchange 2003, and try to make sure that you have all your SMTP mail settings correct.

I know I didn't provide a answer, I just hope that this can give you a little more info to go on.


pcspcsAuthor Commented:
Yes, this is IIS 6 that comes with Windows Server 2003.  Everything has worked fine for a long time.  The forms have not changed.  
pcspcsAuthor Commented:
Anyone out there with some ideas on this?
pcspcsAuthor Commented:
I found the solution. We deployed McAfee VirusScan 8.0i Enterprise.  This produts blocks port 25 by default, which was keeping this computer from using SMTP to send the mail.  Once this restriction was removed the forms started working again.
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