dbox alternate storage and samba

[Francesco]

Hello everyone,
i  was just wondering if it's possible to use a samba share as an
alternate storage for dbox format.

I tried creating a samba share, but when i try to move the email to the
alternate storage using doveadm altmove, no errors are printed but no
mails are moved.

Everything works if the alternate storage is simply another directory on
the server hard drive.

am i mssing something?

thanks in advance.