NFS exporting smbfs mount?

It looks like we might be faced with the necessity of mounting a CIFS
filesystem on a linux box and then exporting that mount over NFS to
various Solaris machines. (We've tried using Sharity on the Solaris
clients, but it is just not up to snuff for reasons I won't go into.)
Searching google, I've seen random mailing list posts that make me think
this is possible, but rpc.mountd and rpc.nfsd on the box I'm testing on
(running a 2.6.3 Mandrake kernel) don't allow re-exporting.

So my question: do other distros use these same rpc.mountd and rpc.nfsd
daemons? (We're not married to a distribution for this box.) Or does
someone have replacements I can use on a linux box that will allow the
re-exportation?

Or have I been misled and such a thing (NFS-exporting a mounted CIFS fs,
either as smbfs or, preferably, cifs) is simply not possible?

Thanks for any and all help.


-karen