The host name of the site binding set in IIS should not be used for FTP site as far as possible. Generally, it is enough to resolve the domain name to the IP of a server, so that it can be accessed through the domain name plus FTP protocol.
IIS provides binding function for FTP site. I don’t find any reasonable use. If the host name binding here is added, the problem of access failure will appear. The error message is530 Valid hostname is expected.If you have to add the host name here, the login name used by FTP client is requiredHost name + | (vertical bar) + login nameFor example:www.abc.com:21|user1。
Windows Server 2008 R2