[horde] authentication active directory with fallback

[Guido Leisker]

Dear all,

1. Does the active directory authentication work automatic, so that a 
Windows Client gives it without users aid to the server?

2. Would it be possible to make a fallback to textlogin 
(ldap/mysql/unix) if the 1st doesnt work, maybe because the active 
directory is down, or he/she still has no account there?

thank you