We have 15-20 WC 5325/5335 devices at an account that just switched from their local Exchange server to Office365. They're insisting on TLS + authentication, so my only option is smtp.office365.com. When trying to scan, users get an "invalid response from SMTP server error." I've found the problem, I'm not sure there is a solution for it on this model.
The devices are all running Papercut with "Auto-Add Me" enabled for email. If I turn off Auto-Add Me, scanning works fine. The problem is that when enabled, the default 'From' address changes to the logged in user rather than the default 'copier@domain.edu.' Since SMTP is also authenticating with copier@domain.edu, it fails when the From address does not match the user trying to authenticate.
On the ConnectKey models (WC 5800, 7800, etc.), there is an "Always Use Default From: Address" setting in SMTP that fixes the problem so that no matter who is logged in, it's authenticating and coming from the Copier user. I don't see a similar setting on the WC5300 series.
Any assistance would be appreciated.