NFS mount of smb mount of windows share: permission denied problem

[Bagatur]

i am trying to mount a windows shared folder in tru64 OSF V5.1 unix, and i wasnt very successful doing it directly from windows box to unix box. samba gives only ftp-like command line client, and nfs option wasnt successul either (i have windows SFU running NFS server on windows box).
so i smb mounted windows shared folder on another linux box running FC1 and now trying to NFS mount this in tru64 unix box.
smb mount in FC1 box is successful, and when i try to mount it in tru64 unix with:
mount FC1box:/mnt/DATA /DATA
it says:
cant's access FC1box:/mnt/DATA: permission denied.
i do have /mnt/DATA in /etc/exportfs, and nfs generally works since i was able to mount /home in tru64 unix box successfully.
is it because i am mounting a mounted file system?
or what should i do to fix this permission issues?

[dandnsmith]

Because it's a network-mounted filesystem, not just because it's mounted (all the filesystems visible on a system will be mounted)

How on earth do you think the poor systems can work out the reads and writes for a system which isn't really there?

[Odd_Bloke]

I'm not sure how relevant that is, but when I was having problems mounting Windows-served drives with smbfs, I just switched to cifs, which did the trick nicely...