Email delivery is failing with "451 4.3.0 <user@example.com>: Temporary lookup failure" error.
Issue
- Postfix is configured to lookup users in ldap database but email delivery is failing with following error
Feb 18 16:53:53 host postfix/smtpd[15621]: > unknown[127.0.0.1]: 451 4.3.0 <user@example.com>: Temporary lookup failure
Environment
- Red Hat Enterprise Linux 5.9
- postfix-2.3.3-6.el5
- openldap-servers-2.3.43-25.el5_8.1
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