OLD SERVER:
ii ldap-utils 2.4.23-7.3 OpenLDAP utilities
ii ldapscripts 1.9.0-2 Add and remove user and groups (stored in a LDAP directory)
ii libldap-2.4-2 2.4.23-7.3 OpenLDAP libraries
ii libnet-ldap-perl 1:0.4001-2 client interface to LDAP servers
ii libnss-ldap 264-2.2 NSS module for using LDAP as a naming service
ii libpam-ldap 184-8.5 Pluggable Authentication Module for LDAP
ii postfix-ldap 2.7.1-1+squeeze1 LDAP map support for Postfix
vs
NEW SERVER:
ii ldap-utils 2.4.49+dfsg-2ubuntu1.8 amd64 OpenLDAP utilities
ii ldapscripts 2.0.8-1ubuntu1 all Add and remove users and groups (stored in a LDAP directory)
ii libldap-2.4-2:amd64 2.4.49+dfsg-2ubuntu1.8 amd64 OpenLDAP libraries
ii libldap-common 2.4.49+dfsg-2ubuntu1.8 all OpenLDAP common files for libraries