Fresh install with minimal iso; afterwards in tasksel selected "Basic Ubuntu Server", "OpenSSH server", "Mail-Server" and "Samba file server".
When sudo-ing the first time after running tasksel, the error occured.
Fix:
run "pam-auth-update" and remove "SMB password synchronization".
Confirmed with 14.04 (x86) and latest updates.
Fresh install with minimal iso; afterwards in tasksel selected "Basic Ubuntu Server", "OpenSSH server", "Mail-Server" and "Samba file server".
When sudo-ing the first time after running tasksel, the error occured.
Fix:
run "pam-auth-update" and remove "SMB password synchronization".