Been receiving this error message with DNF:
Failed to synchronize cache for repo 'community-squeeze': Yum repo downloading error: Downloading error(s): repodata/af83abd2b45ad0b0a3dbf35f89a1d9da366fc2da8255379961 30680ed4ffd9bb-filelists.xml.gz - Cannot download, all mirrors were already tried without success; repodata/518b23002ded655e299fcba7cfd7bcd3a83cf64ba74f7c707d ae5ab957e524c5-primary.xml.gz - Cannot download, all mirrors were already tried without success, disabling.
Failed to synchronize cache for repo 'community-squeeze': Yum repo downloading error: Downloading error(s): repodata/af83abd2b45ad0b0a3dbf35f89a1d9da366fc2da8255379961 30680ed4ffd9bb-filelists.xml.gz - Cannot download, all mirrors were already tried without success; repodata/518b23002ded655e299fcba7cfd7bcd3a83cf64ba74f7c707d ae5ab957e524c5-primary.xml.gz - Cannot download, all mirrors were already tried without success, disabling.