When I try to connect to my server via FTP (using FileZilla), I am getting Response: "421 Too many users are connected, please try again later...". However no matter how many times I try at various times of the day, always get this message.

Not sure if there is a setting I need to change on FileZilla to resolve this, or if the server admin needs to resolve this.

Any suggestions how to resolve this particular error?

Thank you.