[CentOS] Issues with Mirror Sites

Hi,

Newbie question, is there a problem with the Centos 7 mirror sites, no matter what I do the mirror sites are reporting back the meta data in the repodata folder is wrong and I cant do a Yum Update? when I browse to a few of the mirror sites it looks to me that they sym links are broken?

I apologies in advance if I got this completely wrong as am still learning


Cheers in advance


Ken