When selecting the “Reply to” check box to the right of the Employee email address field and then saving it redirects to CRM.WEBSITEADDRESS.com/index.php and displays the error:
Bad data passed in; Return to Home
Can you reproduce that error in this online demo?
https://www.softaculous.com/demos/SuiteCRM
I’m just trying to check if it is a problem just with your system, or if it is a bug for everyone.
If it works there, then we need to check what’s wrong in your system, please let us know your versions (OS, database, web server, PHP, SuiteCRM) and whether this is a new install, or an upgrade.