How do I do local recipient checks on a relay host?

I have two mail servers that are visble to the world and receive incoming
mail. They relay incoming messages to an internal delivery host. My
problem is that when mail is received addressed to screw-you-bob@linfield.edu
(or other varieties of messages designed to generate a bounce to a fake
return address), I want to be able to reject it at the gateway and not have
toi bounce it later. Since all of our mail destinations are defined on our
ldap server, I set up an ldap definition to use as a local recipient map.
The problem is, Postfix seems to ignore it completely (i.e., recipient names
not in the map are still rerlayed on).

Here's the pertinent pieces of the config:

relayhost = calvin.linfield.edu

localrecipient_server_host = ldap.linfield.edu
localrecipient_search_base = o=linfield.edu
localrecipient_query_filter = (&(|(mailLocalAddress=%s)(uid=%s))(mail=*))
localrecipient_result_attribute = uid
local_recipient_maps = ldap:localrecipient

What do I need to do?


Thanks,
Rob


Rob Tanner
UNIX Services Manager
Linfield College
McMinnville, Oregon