_XSERVTransSocketCreateListener: failed to bind listener

On a newly built Solaris 10 server whenever vncserver was started it errored out with these errors:

_XSERVTransSocketCreateListener: failed to bind listener
_XSERVTransSocketUNIXCreateListener:
...SocketCreateListener() failed
_XSERVTransMakeAllCOTSServerListeners: failed to createlistener for local

Fatal server error:
Failed to establish all listening sockets

I checked the permissions of vncserver file and /tmp/.X11-unix/

$ ls -ld /tmp/.X11-unix/
drwxrwxr_x 2 root root 235 Jul 19 19:59 /tmp/.X11-unix/
$

The others group doesn't have permission

# chmod 777 /tmp/.X11-unix/
$ ls -ld /tmp/.X11-unix/
drwxrwxrwx 2 root root 235 Jul 19 19:59 /tmp/.X11-unix/

That fixed the issue.