[SunHELP] Warning: Remote host denied X11 forwarding

[sunhelp at sunhelp.org]

Hi gurus!,

I want to open Xterm over a ssh tunneling but I always get the following
error when I open the ssh connection:

wap104: Failed to get local xauth data.
wap104: Requesting X11 forwarding with authentication spoofing.
wap104: Remote: Remote host has no X11 installed.
Warning: Remote host denied X11 forwarding, perhaps xauth program could not
be run on the server side.

I have tried with diferent boxes all of them with ssh1 and sol8 but it is
always the same behaviour. xauth program is installed and runing in all
those boxes and I can see in both node lists the autorizations:

wap100(SF4800_VDF)# xauth
Using authority file /.Xauthority
xauth> list
172.16.15.176:0  MIT-MAGIC-COOKIE-1  434533525035636f655a74766b4d3533
172.16.15.127:0  MIT-MAGIC-COOKIE-1  67576e5946414e30487a676b2e654138
172.16.15.124:0  MIT-MAGIC-COOKIE-1  326239484777565772505952782f4152
172.16.15.128:0  MIT-MAGIC-COOKIE-1  712f7448596f457941685a53506c5a78
172.16.15.123:0  MIT-MAGIC-COOKIE-1  557677726b4e677341497a7833597367

Anybody knows why I receive the message 'Remote host has no X11 installed'?
Maybe I need any aditional software?

Nothin on the web helped me yet.

Thanks in advance,
Javi