[CentOS-mirror] FTP mirrors & SIZE command

Hello,

The mirror monitoring script has been recently updated to check FTP mirrors and to add them in isoredirect.centos.org when they are up to date. It should be usable too for HTTP mirrors who redirects to FTP mirrors. Unfortunately, a few FTP mirrors refuse the "SIZE" FTP command and, as the script can not check the ISOs file, we are unable to list them (well unless someone has a nice workaround to get the file size, and no, downloading it is not what I am calling "nice").

Is there any reason why somes servers refuse this command ? (it may be for good/bad reason, it is not my point, I am just wondering)

François