Canon iR C6800 Series Portable Manual page 171

Cause
Authentication using the client certificate
was requested by the mail server for
sending e-mail or I-fax.
# 843
There is large difference between the
current time set in the KDC (Key
Distribution Center) server and the one set
in the machine.
# 851
There is insufficient memory remaining in
the system.
The scanned document cannot be stored
because there are more than 100
documents in the specified inbox.
# 852
An error occurred because the main power
switch was turned OFF while a job was
being processed.
# 899
The e-mail message or I-fax has been
successfully sent, but reception may be
incomplete because the transmission was
relayed via multiple servers.
# 995
Reserved communication jobs were
cleared.
Remedy
1. Set Allow SSL in Network Settings in
System Settings (from the Additional
Functions screen) to 'Off'.
2. Change the mail server settings so that
the client certificate is not requested.
1. Change the current date and time in
Date & Time Settings in Timer Settings
(from the Additional Functions screen).
2. Change the current time set in the KDC
(Key Distribution Center) server.
Check the system's available memory, and
delete unwanted documents in the inboxes.
Delete unnecessary documents from the
specified inbox.
Check to see if the main power switch is
turned ON. Try processing the job again, if
necessary.
1. Confirm whether reception was
complete.
2. Check if you received an error
notification.
Reserve the jobs again, if necessary.