Using Active Directory distribution groups in Postfix

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Active Directory has the possibility to create distribution groups which can be used as an email distribution list. This article show you how to use the distribution group as a mailing list for Postfix.

To use integrate Postfix with distribution groups, you need Postfix 2.4 or higher.

To configure Postfix for the distribution groups, add/change the following options in the Postfix files.

main.cf

virtual_mailbox_domains = example.com virtual_transport = zarafa: virtual_mailbox_maps = ldap:/etc/postfix/ldap-users.conf virtual_alias_maps = ldap:/etc/postfix/ldap-groups.conf

ldap-users.conf

server_host = ads_server_ip search_base = ou=users,dc=example,dc=local version = 3 query_filter = (&(objectClass=person)(mail=%s)) result_attribute = mail bind = yes bind_dn = cn=Administrator,ou=users,dc=example,dc=local bind_pw = password


ldap-groups.conf

server_host = ads_server_ip search_base = ou=users,dc=example,dc=local version = 3 query_filter = (&(objectclass=group)(mail=%s)) leaf_result_attribute = mail special_result_attribute = member bind = yes bind_dn = cn=Administrator,ou=groups,dc=example,dc=local bind_pw = password

Master.cf

zarafa unix - n n - - pipe flags= user=vmail argv=/usr/bin/zarafa-dagent -R ${recipient}

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