Client [Name] Unknown" Error Message; Login Hangs For A Long Time At "Getting User Info; User Is Logged Out Almost Immediately After Logging In; Ldap Issues - Lexmark Color Laser Installation And Administration Manual

"Client [NAME] unknown" error message

This error indicates the KDC being used to authenticate the user does not recognize the User Principle Name specified
in the error message
1
From the Embedded Web Server, click Settings > Embedded Solutions > PKI Authentication >Configure.
2
If the Simple Kerberos Setup has been configured in PKI Authentication, verify that the IP address or hostname
of the Domain Controller is correct.
3
If you are using a Kerberos configuration file, verify that the Domain Controller entry is correct.

Login hangs for a long time at "Getting User Info..."

For information about LDAP-related issues, see"LDAP Issues" on page 42.

User is logged out almost immediately after logging in

Try increasing the Panel Login Timeout interval:
1
From the Embedded Web Server, click Settings > Security > Miscellaneous Security Settings > Login
Restrictions.
2
Increase the time (in seconds) of the Panel Login Timeout.

LDAP Issues

LDAP lookups take a long time, and then may or may not work

This normally occurs either during login (at "Getting User Info"), or during address book searches.
P 389 ( -SSL)
ORT NON
These ports are used by the printer to communicate with the LDAP server, and must be open in order for LDAP
lookups to work.
R DNS
EVERSE LOOKUPS ARE DISABLED ON THE NETWORK
The printer uses reverse DNS lookups to verify IP addresses. If reverse lookup is disabled on the network:
1
From the Embedded Web Server, click Settings > Embedded Solutions > PKI Authentication > Configure.
2
Select Disable Reverse DNS Lookups.
3
Click Apply.
LDAP R
EFERRALS ARE ENABLED
1
From the Embedded Web Server, click Settings > Embedded Solutions > PKI Authentication > Configure.
2
Select Disable LDAP Referrals.
Note: Leaving LDAP referrals enabled can increase LDAP search times.
636 (SSL)
OR PORT IS BLOCKED BY A FIREWALL
42