We recently added LDAP as a source lookup table for aliases, to supplement our previously used aliases hash table using the "Postfix LDAP Howto" <http://www.postfix.org/LDAP_README.html> as a reference. Happily, it appears to work as expected.
One thing that wasn't clear to me though was if there was a precedence to the order in which aliases are resolved based on their source. We have the following in main.cf: alias_maps = hash:/etc/aliases, ldap:/etc/postfix/aliases-ldap.cf Ideally, for us, precedence would be determined by the order that the sources are defined for alias_maps, and that lookups would halt once a match was found. I think this behavior is implied by the text provided with the example in the Howto, but would be reassured by some positive confirmation. Example: local(8) aliases "Upon receiving mail for a local address "ldapuser" that isn't found in the /etc/aliases database, Postfix will search the LDAP server listening at port 389 on ldap.example.com." Aloha, -baron
