Hi bigzoo,
Thank you for using the Support Forum. Please take a look at the solution for Configuring the SMTP Server Settings. If this does not help please consider contacting your support centre for further assistance.
We have Xerox ColorQube 8900 Color Multifunction Printer, The SMTP Authentication login username, we tried to use our domain email, but does not work (send email faild). Have to use xerox3635mfp@gmail.com, how can we change it to our own domain email? thanks