/etc/courier/ldapaddressbook is in courier-ldap 0.78.0-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | ##VERSION: $Id: aab9bb42224fbb92c11eabb477282a8f0efe1c17-20150228120142$
#
# ldapaddressbook created from ldapaddressbook.dist by sysconftool
#
# Do not alter lines that begin with ##, they are used when upgrading
# this configuration.
#
# This is a list of some public LDAP address books. This is a global
# list -- all clients will have this list by default.
#
# Example:
#
# YourOrganizationName<tab>ldap.example.com<tab>ou=member_directory,o=example.com<tab>ou=people,o=example.com
#
##NAME: ldapaddressbook:0
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