I am getting the following error in my Windows Server 2012 R2 - IIS6 - SMTP Relay logs when I send a scan from a Sharp MX-M364N copier:
2018-09-25 20:28:54 220.127.116.11 OutboundConnectionResponse SMTPSVC1 - 0 - - 554+5.2.0+STOREDRV.Submission.Exception:SendAsDeniedException.MapiExceptionSendAsDenied;+Failed+to+process+message+due+to+a+permanent+exception+with+message+Cannot+submit+message.
The email is also sent to the BADMAIL folder.
Other information: My relay authenticates with Office 365. The credentials to login to Office 365 have been verified as correct. Other copiers in my organization can connect and relay without a problem.
Any ideas on where to look for answers? I Googled the error code above and checked Sharp's documentation to see if a specific model might have this problem.