I did perldoc Net::LDAP::Filter but I'm afraid it was a bit too opaque for me, being an utter LDAP newbie.

Some of my attempts to enumerate users with LDAP were:

1. SEARCH_BASE="ou=OURSITE,o=OURORG", $filter="CN=Recipients"
2. SEARCH_BASE="ou=OURSITE,o=OURORG",$filter="cn="
3. SEARCH_BASE="ou=OURSITE,o=OURORG",$filter="cn=*"
4. SEARCH_BASE="cn=Recipients,ou=OURSITE,o=OURORG", $filter = ""
5. SEARCH_BASE="cn=Recipients,ou=OURSITE,o=OURORG", $filter = FILTER_N
+ORMAL_USERS
[download]

All of these returned no results.

Thanks for the suggestions. It sounds like I need to do some more hunting whereever Exchange admins congregate...

Josh