We just installed a new Color imageClass MF733CDW and configured it to scan to email, using the following settings:
SMTP Server: smtp.office365.com
Use SMTP Auth, username: authenticatedaccount@ourdomain.com with known good password
Checked TLS
Set Networking Port to 587
When trying to scan to email, the printer spits out a piece of paper that says "Error". The TX logs through the Remote UI says Error #806, which supposedly means the recipient email address isn't valid. But we know it is.
We also have an open SMTP relay. When I use those settings over port 25 with no authentication, the scan goes through just fine.
Can anyone think of anything else for us to look at? We've been an HP shop until now, so I might be missing a setting in this Canon UI somewhere? Or ... I dunno. I'm just stumped.