[newbie] Problem with Telnet

[Fabio Tang]

Hello ALL

Here I am having a little problem trying to access the linux with
telnet. Its strangeous when root can' t access but any other commom user
can normally. And if I access like a normal user and after this switch
to root with su command, I get root access normally. Why I can't access
as root in telnet directly ? What may be wrong or misconfigurated ?
Thanks for any help.

Fabio
from Sao Paulo, Brazil.