swashplate,
As danny says, the ILS must be the correct category for autoland - at least CAT II reqd.
Unfortunately it is not such at Malaga. During VMC it is possible to autoland a 757 on a CAT 1 ils if you wish, but there are limits. For example the ILS GP angle must be between 2.5 deg and 3.1 deg, which at Malaga, is also too steep (3.2 or something I believe..)