Zimbra LDAP and MediaWiki
Fragment of a discussion from Extension talk:LDAP Authentication
Working with the same problem. The main problem is that the zimbra ldap is having some very strict acl's on the group-tree (we're also using posix). Tried it with a bind user, but the plugin always seem to try to bind with the regular user, which hasn't read rights in that part of the ldap-tree. There are some options, allow everyone to read more of the ldap, or do the complete lookup by the bind-user, which probably would require a rewrite of the plugin. If someone has other options....