There has been a report that your Fedora mirror 'mirror.as24220.net' is
not totally up to date.
I had a look at your mirrormanager entry and I see that the crawler also has
trouble scanning your mirror in under three hours.
This is related to the fact that your rsync server is not reachable
anymore:
$ rsync
rsync://mirror.as24220.net/epel
rsync: failed to connect to
mirror.as24220.net (116.66.162.254): Connection refused (111)
rsync error: error in socket IO (code 10) at clientserver.c(122) [Receiver=3.0.9]
Therefore the crawler falls back to HTTP scanning which is not optimal.
If possible, please re-enable the rsync server. Thanks.
Looking at
http://mirror.as24220.net/pub/fedora/linux/updates/testing/25/x86_64/repo...
it also seems you are not deleting old files on your mirror. Not really
important but also not necessary to keep all those old repo databases
around.
Adrian