Address Book over SSL to XServ Open Directory

Has anyone successfully configured their Address Book to connect over SSL to an Open Directory server? I have Address Book connecting over port 636 with the SSL checkbox enabled. The oddest thing is that all of my non-Apple clients appear to connect to the server just fine over port 636. Even (yikes) Microsoft Entourage works. When I watch the console, on the client, I see "Can't Contact LDAP Server (81)". On the server, I see an attempted negotiation. Now here's a clue: When I turn off SSL on the Entourage Directory Client, I see the _exact_ same behavior on the server. Anyone else seen anything like this? I'm thinking that this might have some problem with Address Book not liking self-signed certs (since the cert works fine with everything else).