From: Adam Clark (adam.clarkngv.vic.gov.au)
Date: Thu Apr 01 2004 - 17:21:37 CST

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Thanks, will give it a go

Adam

-----Original Message-----
From: owner-postfix-userspostfix.org
[mailto:owner-postfix-userspostfix.org] On Behalf Of
Victor.Duchovnimorganstanley.com
Sent: Friday, 2 April 2004 1:27 AM
To: Postfix Users List
Subject: RE: multiple destinations

On Thu, 1 Apr 2004, Adam Clark wrote:

> The new postfix will contain no local mailboxes. Eventually all mail
> will go to The exchange box, but during our transision period we need
> to see if the user Exists on the exchange box, if it doesn't, attepmts

> deliveries to our old postfix Box.

What do you mean by "see if"? Do you mean an active check of some sort

This requires a table, and transport should do the job just fine.

        exchange_user1

>
> Currently, .forwards to personmail.internal.domain, so we could do it

> this way But its kinda messy. I had a look through the ldap
> documentation to see what it Can do. I may be able to make a script
> that looks at our exchange box Grabs the entire catalog of mail
> addresses then creates a hash file with a catch All at the bottom to
> route off to old box.
>

Or you can query the Exchange LDAP server live:

        transport_maps = ldap:AD, hash:/etc/postfix/transport

        AD_server_host = ...
        AD_server_port = 389
        AD_bind_dn = ...,dc=domain,dc=tld
        AD_bind_pw = bind_dn's_passwd
        AD_version = 3
        AD_query_filter = proxyAddresses=smtp:%s
        # Any single valued attribute that is never missing will do
        AD_result_attribute = sAMAccountName
        AD_result_filter = smtp:[bridgehead.example.com]

Then in /etc/postfix/transport just map the entire domain to the old
Postfix server.

--
        Viktor.

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