In Mac OS X 10.6’s Open Directory, when you add ManagedClient to managed preferences you end up with two com.apple.mail entries (one suffixed with .managed). One is called com.apple.mail.managed, which is used for Mail for 10.5 and below and frankly doesn’t seem to be complete, so I’ve manually populated my environment with keys from 10.5 Server. The other is com.apple.mail, which now supports SSL, but only gives the drop-downl list for Always, showing no options in Once/Often. One thing that was a bit confusing to me is what Beau and I discovered to be a GUI bug, where when you click on a manifest and then click on Once, Often…