[CentOS-mirror] Error rsync.

I registered centos-mirror as template: HTTP: http://mirror.onet.vn/centos/ FTP: ftp://mirror.onet.vn/centos/ RSYNC: rsync: //mirror.onet.vn/centos/

Sync schedule: Every 2 hrs Bandwidth: 1000Mb/s Location: (For US : also mention the State) Sponsor: onet.vn Sponsor URL: IPv4 address to authorize: 103.90.228.253 IPv6 address to authorize: Email contact: support@onet.vn Mirroring AltArch  : no But why do not I see it on the list mirror centos! And why i run this command rsync -aqzH --delete msync.centos.org::CentOS / var / www / html / centos / @ERROR: Unknown module 'CentOS' Rsync error: error starting client-server protocol (code 5) at main.c (1516) [Receiver = 3.0.9] Is not synchronized to be! Thank you!