[rt-users] Login problems with "automatically created user"

[Fábio Sérgio Cruz]

Hi, all,
 
I'm new to RT and need some help. 
 
I'm facing this problem:
A new user is automatically created whenever a queue receives a message from
an email address unknown to RT.
This new user is allowed to access RT, but is granted no rights (except, I
supose, those given to the Everyone group).
 
However, when this new user tries to log in to RT to keep up with its own
tickets - with no password - the login is denied.
Is there a default password for this kind of "automatically created user"?
 
Thanks for any help.
 
My setup is:
 
RT 3.2.2
RedHat 9.0
MySQL v4.0
Apache 2.04
Perl v5.8.0
mod_perl v1.9907
 
Regards,
 
Fabio Cruz
Camara dos Deputados