Mine

# LDAP: Perform various LDAP functions depending on LDAPMode variable.
# Presently, the only mode supported is 'verify', which will verify the existence
# of an unknown user in LDAP prior to creating them as a new user in the system.
# This is useful on some systems acting as gateway machines.
#
#LDAPMode   verify
#LDAPHost   ldaphost.mydomain.com
#LDAPFilter "(mail=%u)"
#LDAPBase   ou=people,dc=domain,dc=com