root on localhost don't send messages on debian testing

[Eriberto <jemf@gabcmt.eb.mil.br>]

Hello all,

My sendmail 8.13.1-12 running on Debian with auth don't accept mail
from root. I have scripts in crontab. The return message is:

---------------------------------------------------------------------
The original message was received at Thu, 16 Sep 2004 13:08:02 -0300
from root@localhost

  ----- The following addresses had permanent fatal errors -----
root
   (reason: 530 5.7.0 Authentication required)
   (expanded from: root)

  ----- Transcript of session follows -----
... while talking to [127.0.0.1]:

> > > > > > MAIL From:<root@halls.rede.com.br> SIZE=191
> > >      
AUTH=root@halls.rede.com.br
<<< 530 5.7.0 Authentication required
554 5.0.0 Service unavailable
---------------------------------------------------------------------

My sendmail.mc have:

TRUST_AUTH_MECH(`EXTERNAL LOGIN PLAIN')dnl
define(`confAUTH_MECHANISMS', `EXTERNAL LOGIN PLAIN')dnl
FEATURE(`no_default_msa',`dnl')dnl
DAEMON_OPTIONS(`Port=smtp, Name=MTA, M=E')dnl

Help!

Thanks,

Eriberto