Here is a problem that affect some Xerox printers, especially older Xerox WorkCentre printers. You update your internet settings, and suddenly scan to email does not work anymore. You’ve updated your SMTP settings and are absolutely sure it is correct. It turns out, this is a simple DNS problem. If any of your DNS servers is in the range of 0.0.0.0 to 1.1.1.1, scan to email won’t work. So if you set your router’s DNS servers to Cloudfare’s DNS server of 1.1.1.1, 1.0.0.1, it will mess up the Xerox scan to email feature. You can assign a static IP and DNS in the printer manually, or you could just use your ISP’s default DNS servers in your router.