I have run into an issue occasionally with my browser-based forms.
A client filling out the form tried to submit it, and the following error came up: "Critical Error: An error occurred submitting this form to the web server."
From within the firewall, I can submit it just fine. Many other people outside the firewall, in the same situation as the person who received the critical error, can also submit it without any issues.
Has anyone else run into this?
The forms are built using InfoPath 2010, and posted on a Sharepoint 2007 site. The compatibility for the forms is set to "Web Browser Form (InfoPath 2007)".