I am relatively new to Linux, and I am trying to mount a CIFS filesystem from an openfiler instance I have on my network in Red Hat. The openfiler instance is authenticating using AD. I am able to connect using samba: smbclient '\\10.25.214.26\cluster_storage.cluster.Cluster' -U [DOMAIN]+[USERNAME] Enter DOMAIN+USERNAME's password: Domain=[DOMAIN] OS=[Unix] Server=[Samba 3.5.6] smb: \> When I attempt to mount on boot via fstab, I am told that the line is bad during startup. mount -t cifs -o username=[DOMAIN]+[USERNAME], password=[my password], domain=[domain.edu] '\\10.25.214.26\cluster_storage.cluster.Cluster' /mnt/scratch Any help would be greatly appreciated.