[Samba] Does winbindd/pam transmit cleartext authneticating against an NT PDC

[Karl DeBisschop]

I'm being told that when winbindd is used to connect a Linux client to
an NT PDC, that encrypted passwords cannot be used in transport. In
other words that passwords are sent over the wire in clear text.

I find this surprising. Nor can i find documentation of this assertion
anywhere.  Can anyone definitively say this is true or false?

Thanks.

-- 
Karl DeBisschop <kdebisschop at alert.infoplease.com>
Pearson Education/Information Please