[KLUG Members] Postfix and ldap

[agencies_ad1 at sancharnet.in]

I am currently running postfix-2.0.16.

I have configured postfix to query the ldap server to verify email addresses as
follows:

ldap-usermap_server_host=ws13nt.willscot.com, ws3nt.willscot.com
ldap-usermap_search_base=dc=willscot, dc=com
ldap-usermap_result_attribute=mail,proxyaddresses, othermailbox
ldap-usermap_bind_dn=cn=Service Account,ou=Domain Admins,dc=willscot,dc=com
ldap-usermap_version=3
ldap-usermap_query_filter=proxyaddresses=smtp:%s

#local_recipient_maps = hash:/etc/aliases,ldap:/etc/postfix/ldap-aliases.cf
local_recipient_maps = hash:/etc/postfix/aliases,ldap:ldap-usermap
unknown_local_recipient_reject_code = 450


The problem is if the ldap servers are unavailable postfix rejects all email
without queuing for retry. Is it possible to configure postfix to defer
delivery of any email when the ldap servers are offline.

Thanks

Regards,

Komal

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