postfix/templates/group_aliases.conf

<%-
  ldap = ldap_servers.map { |l| "ldaps://#{l}:636" }
-%>
server_host = <%= ldap.join(' ') %>
search_base = <%= dc_suffix %>
query_filter = (&(cn=mga-%u)(objectClass=groupOfNames))
result_attribute = mail
special_result_attribute = member
bind = yes
bind_dn = cn=postfix-<%= hostname %>,ou=System Accounts,<%= dc_suffix %>
bind_pw = <%= ldap_password %>
# postfix complain on url 
# warning: dict_ldap_open: URL scheme ldaps requires protocol version 3
version = 3 
domain = group.<%= domain %>
1	misc	2335	<%-
2	misc	2345	ldap = ldap_servers.map { \|l\| "ldaps://#{l}:636" }
3	misc	2335	-%>
4	misc	2345	server_host = <%= ldap.join(' ') %>
5	misc	1378	search_base = <%= dc_suffix %>
6			query_filter = (&(cn=mga-%u)(objectClass=groupOfNames))
7			result_attribute = mail
8			special_result_attribute = member
9			bind = yes
10			bind_dn = cn=postfix-<%= hostname %>,ou=System Accounts,<%= dc_suffix %>
11			bind_pw = <%= ldap_password %>
12			# postfix complain on url
13			# warning: dict_ldap_open: URL scheme ldaps requires protocol version 3
14			version = 3
15			domain = group.<%= domain %>