Canon MF419x User Manual page 763

● In I-Fax reception, the machine cannot receive the e-mail if its size exceeds 24 MB. Ask the sender to
reduce the size of the e-mail down to under 24 MB and try resending.
#839
A user name and password that are used for SMTP authentication are not set correctly.
● Set the user name and password correctly.
Configuring Basic E-Mail Settings(P. 464)
Configuring E-Mail/I-Fax Communication Settings(P. 469)
#841
When sending an e-mail/I-Fax, an encryption algorithm that is common to the mail server is not present.
● Clear the [Use TLS] check box for the SMTP server.
Configuring E-Mail/I-Fax Communication Settings(P. 469)
● Add the common encryption algorithm to the mail server settings.
When verifying a TLS server certificate to communicate to the SMTP server, a verification error occurred.
● Check that the CA certificate that signed the TLS server certificate on the SMTP server side is registered to
the machine by using the Remote UI.
Verifying Key Pairs and Digital Certificates(P. 602)
● Check that the TLS server certificate on the SMTP server side is valid.
● Check that the TLS server certificate is not a self-signed certificate.
#844
TLS encrypted communication to a POP3 server failed when sending an e-mail with POP before SMTP.
● Check the TLS encrypted communication settings in the POP3 server.
● Clear the [Use TLS] check box for the POP3 server. If the problem persists, clear the [Use POP
Authentication Before Sending] check box, and set the communication setting to a setting other than POP
before SMTP.
Configuring E-Mail/I-Fax Communication Settings(P. 469)
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. 602)
● 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 or I-Fax could not be sent due to a POP authentication failure.
Troubleshooting
754