Hello, there are a few things. First of all, the "CentOS-incdvd" target is deprecated. You should use plain "CentOS" nowdays, which includes the DVD images as well. The hostname has also changed accordingly, so the full path is now us-msync.centos.org::CentOS. But this might not be your primary problem. If the IP address of your server has changed, you may need to tell the new IP addresses where your rsyncs come from so that the ACLs could be updated accordingly. Note that CentOS msync machines are now available over IPv6, so if your machine has IPv6 connectivity (even if the address isn't in public DNS), you should tell us the IPv6 address as well. For further reading: https://lists.centos.org/pipermail/centos-mirror-announce/2014-June/000015.html https://wiki.centos.org/HowTos/CreatePublicMirrors