Mount cifs on Ubuntu Operation not permitted

I'm tryng to mount a shared folder from a Windows Server 2003 in a Ubuntu 18.04

My /etc/fstab is this:

//server/directory/source  /mnt/destination cifs vers=1.0,noperm,credentials=/root/.smbcredentials,uid=0,gid=0,sec=ntlm,x-systemd.automount  0   0

but when I try to mount with command:

mount -a

I recive an error message:

mount error(1): Operation not permitted Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

The file .smbcredentials is like this:

user=myusernamepassword=mypassworddomain=mydomain

Thank you for suggestions!