Try one or more of the following:
The printer uses these ports to communicate with the LDAP server. The ports must be open for LDAP lookups to work.
The printer uses reverse DNS lookups to verify IP addresses. If reverse DNS lookups are not used on your network, then do the following:
On printers running the Embedded Solutions Framework (eSF) version 3.0 or later:
From the Embedded Web Server, click Settings > Security > Security Setup.
From Step 1 under the Advanced Security Setup heading, click Kerberos 5.
Under the Kerberos Settings heading, select Disable Reverse IP Lookups.
Click Submit.
On printers running eSF version 2.0:
Access the application configuration settings from the Embedded Web Server.
Under the Advanced Settings heading, select Disable Reverse DNS Lookups.
Click Apply.
| Note: If you are unsure about which version of eSF your printer is running, then see Checking which version of the Embedded Solutions Framework is installed on a printer. |
Access the application configuration settings from the Embedded Web Server.
Under the Advanced Settings heading, select Use SSL for User Info.
Click Apply.
Narrow the LDAP search base to the lowest possible scope that includes all necessary users.
Make sure all LDAP attributes for the user are correct.