smtp.office365.com
port - 587
STARTTLS for encryption (Not STARTTLS (If Available))
Authentication is ON and set it as On Device
Make sure you have the latest firmware
And if it still won't work, do this
And Change from Dual Stack to IPv4
If that doesn't work, there is an issue in the Time/date/DNS/Gateway or Proxy settings outside of the Email stuff.
I have never in my life seen a fault code even similar to 30088-4, nothing about the way it is formatted implies a Xerox device is in use.