Courier mail server ldap

A very specific question!

To set up a Courier Mail Server to use LDAP for authentication, you'll need to follow these steps:

Prerequisites

• Courier Mail Server installed and configured
• LDAP server (e.g., OpenLDAP, Active Directory) set up and running
• LDAP schema configured to support mail accounts

Step 1: Configure Courier Mail Server to use LDAP

Edit the /etc/courier/authldap file to specify the LDAP server and authentication settings. For example:

LDAP_SERVER=ldap://your.ldap.server:389
LDAP_BASE_DN=dc=example,dc=com
LDAP_BIND_DN=cn=ldap_bind,dc=example,dc=com
LDAP_BIND_PASSWORD=your_ldap_bind_password

Step 2: Configure Courier Mail Server to use LDAP for authentication

Edit the /etc/courier/auth file to specify the authentication mechanism. For example:

AUTHMECHANISM=ldap
AUTH_LDAP=authldap

Step 3: Restart Courier Mail Server

Restart the Courier Mail Server service to apply the changes:

service courier restart

Step 4: Test LDAP authentication

Use the courier test command to test LDAP authentication:

courier test -a -l -u your_username

If the authentication is successful, you should see a message indicating that the user is authenticated.

Additional configuration

You may need to configure additional settings in the /etc/courier/authldap file, such as:

• LDAP_USER_ATTR to specify the attribute used to store the user's email address (e.g., mail or userPrincipalName)
• LDAP_GROUP_ATTR to specify the attribute used to store the user's group membership (e.g., memberOf)
• LDAP_SEARCH_FILTER to specify a filter for searching users in the LDAP directory (e.g., (objectClass=mailUser))

Consult the Courier Mail Server documentation and your LDAP server documentation for more information on these settings.