Anyway to get around this dumb issue when wanting to allow blocks of users to share the same ip? Also, when doing this change, can we avoid issues with propagation? Its not like the sites are being pointed to a new server, its the exact same one.
IMPORTANT: Customers must ftp to ftp.theirdomain.com for ftp to work correctly. They cannot ftp to theirdomain.com if you change their main shared IP. (Note: theirdomain.com should be replaced with the user's actual domain.)