No problem at all using JNDI (LDAP provider) to access Microsoft's ADS. I built an entire application that was using ADS as it's *database*, and was accessing the user accounts' attributes for identification. You can access a specific server, or the global cache, depending on the connection string you specify.

cheers
laurent

I think the Microsoft Exchange Server should have an LDAP interface available for its directory/directories, so you should be able to access it as a regular LDAP server.

No, I have not done so programmatically. But I have used a regular LDAP client application, e.g. the address book/directory service facility in several common email applications, to browse the Exchange Server GAL, some years ago, so I know it works.

I think we had it working, back around 1998, viewing the Exchange Server GAL entries on the latest Exchange Server as of then (probably 5.5), with Outlook 98 and Outlook Express 4 (e.g. accessed as a generic LDAP directory server, not through Microsoft proprietary MAPI as an Exchange Server), also from the address book/directory lookup in Netscape Communicator 4.X, also from a standalone LDAP client from Siemens (maybe it was called "DirX"? I forget, sorry).