Canon MF247dw User Manual page 573

Configuring E-Mail Communication Settings(P. 363)
When verifying a TLS server certificate to communicate to the POP3 server, a verification error occurred.
● Check that the CA certificate that signed the TLS server certificate on the POP3 server side is registered to
the machine by using the Remote UI.
Verifying Key Pairs and Digital Certificates(P. 446)
● Check that the TLS server certificate on the POP3 server side is valid.
● Check that the TLS server certificate is not a self-signed certificate.
#846
An e-mail could not be sent due to a POP authentication failure.
● Check the setting, and try again.
Configuring E-Mail Communication Settings(P. 363)
#852
The machine turns OFF for some reason.
● Check whether the power plug is inserted into an outlet firmly.
#995
A document waiting to be sent was canceled.
● Send the document again as necessary.
Troubleshooting
565