[dlochart]

Originally Posted by bjquinn

Maybe you're way past this, but the following link seems helpful...

Automatically Update Recipient Maps From Active Directory - Fairly-Secure Anti-Spam

That is how you do it! I just haven't hooked up the PERL script yet because the exchange server is on one network (local) and the AD is on another behind a firewall.

An alternate approach I would like to try involves Postfix directly.

The Postfix forum offered me this:

...
Futhermore the Postfix LDAP driver can do recipient lookups against AD:

server_host = ad.example.com
bind_dn = ...
bind_pw = ...
version = 3
query_filter = proxyAddresses=smtp:%s
result_attribute = mail
...

Not sure how it fits in but it would be better than the PERL script solution. Either way it is doable!