Canon imageRUNNER ADVANCE C5560i III User Manual page 1339

● Check the status of the mail server and DNS server.
◼
#833
MDN (Message Disposition Notification) mail could not be sent because the TCP/IP settings were not
specified.
● Check <Communication Settings>, <DNS Settings>, and <IP Address Settings>.
Setting E-mail/I-Fax Communication(P. 74)
Making DNS Settings(P. 47)
Setting an IP Address(P. 36)
MDN (Message Disposition Notification) mail could not be sent due to a problem with the mail server or
DNS server.
● Check the status of the mail server and DNS server.
◼
#834
An MDN error notification was received because the I-fax address or destination conditions were
incorrect.
● Check the specified I-fax address and the destination conditions.
An MDN error notification was received because a problem occurred in the mail server or network.
● Check the status of the mail server and network.
An MDN error notification was received because a problem such as a full memory occurred at the other
party.
● Check the conditions and status of the other party.
◼
#835
The maximum number of text lines that can be received with I-fax was exceeded.
● Tell the other party to reduce the number of text lines in the message body and send again.
◼
#837
A connection request was received from a host whose connection is restricted by the Receive Filter
settings in Firewall Settings.
● Check the Receive Filter settings in Firewall Settings. This may also represent a hacking attempt via
unauthorized access.
Specifying IP Addresses in Firewall Settings(P. 729)
◼
#838
The license required to use the send function has expired.
● Purchase a license for the send function.
Troubleshooting
1325