The functionality of converting map options to smbmnt arguments is now handled by /bin/mount.smbfs, which is shipped with Samba 2.0.6 or later. You therefore need to make sure you have /bin/mount.smbfs installed on your system if you plan on using smbfs with autofs. WARNING: Some versions of Samba incorrectly install this as /bin/mount.smb rather than /bin/mount.smbfs. If that is the case on your system, please link or move /bin/mount.smb to /bin/mount.smbfs. This is a Samba bug/misfeature and has been reported to the Samba maintainers.