[horde] _horde_hook_postauthenticate()

[Liam Hoekenga]

> So is the hook not called on initial login? Or is that avoided  
> because of your transparent authentication? Why can't you block them  
> where you do transparent auth, then?

Admittedly, some of the weirdness may be due to the transparent auth.

I've got initial_app set to imp.. so, if I go to..

    https://webmail.example.edu/horde/turba/

I get redirected through IMP, and I see my error message.

If I then go back to...

    https://webmail.example.edu/horde/turba/

I get dumped into turba with a last login message.

Liam