Today I got this report from my SMT:

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WARNING: The following repositories cannot be mirrored.
      Maybe you have not enough permissions to download these repositories?

* SLES10-SP2-Pool sles-10-x86_64
* SLES10-SP2-Pool sles-10-i586

However, if you try and disable that repository with smt-catalogs -d, SMT is gonna quit your action with " 0 repositories disabled". Since I didn’t want the error to show up again, here’s a quick way on how to disable it.

Open up a mysql shell (mysql -u root -p preferably) and enter those queries:

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use smt;
UPDATE Catalogs SET domirror='N' WHERE DOMIRROR='Y' AND MIRRORABLE='N';

Afterwards, if you rerun smt-mirror the warning message should be gone.