I have a workcentre 3335 machine, and we moved to O365 over the weekend. I have configured the device with the SMTP relay as per Microsoft, and added the IP address of the network the machine is on, but when I send out, I get "Enter a valid email address. If failure persists, contact Email administator" on the machine. I am trying with the microsoft domain name, port 25, no auth or encryption.
I upgraded to firmware version 60.004.00.000..
If I try to setup with SMTP auth and SSL, it also fails.
DNS is setup correctly, as I am able to send using a standard SMTP server that I test with. The account is the same that we use on a machine in another office, and I also tested with multiple user accounts.
How can I test the settings without having to send an email from the unit, and also how can I determine what is happening in the background with this error. I believe it is able to talk to O365, but I don't understand the failure reason.
Weird workaround - I am using SMTP2Go and that works, but when it's sending, it shows as email@example.com instead of the SMTP auth username and password I'm using.
The above is how outlook rec'd the mail. Should be showing from firstname.lastname@example.org
Below are settings. Note the Authenticated User radio button cannot be selected and I've tried in IE too.