Message Condition Solution and reference
"Network communication
has failed. Fax email
account is not registered.
Please check settings."
[Fax Email Account] is
not specified.
Specify the settings in "User Name" and
"Password" in [Settings] [Fax Settings]
[Detailed Initial Settings] [Fax Email
Account].
"Network communication
has failed. Fax email
address is not registered.
Please check settings."
[Fax Email Account] is
not specified.
Register Email Address in [Settings] [Fax
Settings] [Detailed Initial Settings] [Fax
Email Account].
"Network communication
has failed. No response
from the destination.
Please check the cable
connection and if the
network equipment is
turned on."
The destination device
did not respond.
• Check that the computer specified as the
destination is operating normally and
connected to the network.
• Check that the machine is connected to
the network correctly.
"Network communication
has failed. POP/IMAP
server authentication
error has occurred.
Please check email
account and password."
A login attempt to the
POP3 (IMAP4) server
failed.
Check the [POP before SMTP] setting on
[Settings] [System Settings] [Send
(Email/Folder)] [Email] and the [Fax Email
Account] setting on [Settings] [Fax Settings]
[Detailed Initial Settings].
"Network communication
has failed. POP/IMAP
server is not registered.
Please check settings."
The POP3 (IMAP4)
server address is not
registered.
Specify the setting in [Settings] [System
Settings] [Send (Email/Folder)] [Email]
[POP3 / IMAP4 Settings].
"Network communication
has failed. S/MIME
certificate error has
occurred. Please check
the certificate of both
destination and this
machine."
A user certificate
(destination certificate)
is not registered or has
expired.
Install the correct user certificate.
"Encrypting Network Communication", Security
A device certificate
(destination certificate)
is not registered or has
expired.
Install the correct device certificate.
"Encrypting Network Communication", Security
10. Troubleshooting
272
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