I have a small test environment setup with the following: Server Red Hat Enterprise Linux ES 2.1 Samba 2.2.7 - built from source OpenLDAP 2.0.27 - built from source OpenSSL 0.96b - built from source Note: All packages were downloaded from the Red Hat Network as Source RPMs - as far as I know, these are the latest "red Hat approved" versions. I made the proper changes to the .spec file and recompiled each of them with rpmbuild. Workstation Windows 2000 Server with no service packs I have the Samba machine setup to use LDAP as it's user/group/workstation/password backend following the IDEALX.org HOWTO. This seems to be working as I can access any share on the Samba machine using accounts from the LDAP database. I'm using SSL/TSL to control LDAP transfer traffic as I plan on having three LDAP/Samba Servers in the end. I'm also using a MD5 hashed rootDN password as well - just for a more secure environment. My intention is to load the Windows 2000 machine up as an Exchange 5.5 Server and use the Samba/LDAP users/groups for authentication in this test. This is the last big hurdle I have before going to an nearly pure Samba ran backoffice! (Now if only there was a Linux Exchange clone.... :-P ) But when I go to have the Windows 2000 machine join the domain, I get this in the <machine-name>.log: -------------------------------------------- passdb/pdb_ldap.c: ldap_open_connection(200) LDAPS Option Set...! passdb/pdb_ldap.c: ldap_connect_system(246) BIND FAILED: Can't contact LDAP Server. -------------------------------------------- Does anyone have a clue about this? That last part is the most puzzling - the LDAP server is the SAME machine as the Samba Server. I'm thinking it has something to do with authentication, but I can't seem to find anything "out-o-whack". I didn't post any ".conf" files as I did't know the proper way to send those - as attachments or as inline text. If they will help anyone, I can post those at a later time. -- Kevin L. Collins, MCSE Systems Manager Nesbitt Engineering, Inc.