Secure E-mail LDAP issues

LDAP lookups fail

Try one or more of the following:

Make sure that Port 389 (non-SSL) and Port 636 (SSL) are not blocked

Make sure that the server and firewall settings are configured to allow communication between the printer and the LDAP server on Port 389 and Port 636.


Make sure that the address book setup contains the host name for the LDAP server

  1. From the Embedded Web Server, click Settings or Configuration.

  2. Click Network/Ports > Address Book Setup.

  3. Make sure that the host name (not the IP address) of the LDAP server appears in the Server Address field.

  4. Apply the changes.


If the LDAP server requires SSL, then check the address book setup settings

  1. From the Embedded Web Server, click Settings or Configuration.

  2. Click Network/Ports > Address Book Setup.

  3. Check the following settings:

    • Server Port—Set to 636.

    • Use SSL/TLS—Select SSL/TLS.

    • LDAP Certificate Verification—Select Never.

  4. Apply the changes.


Narrow the LDAP search base to the lowest possible scope that includes all necessary users


Check that the LDAP attributes being searched for are correct

Make sure that all LDAP attributes for the user are correct.