Edit your message file to include magic cookies as appropriate.
See ftpaccess(4) for a list of cookies you can use.
The following is an example of a message file that includes magic cookies:
Welcome to %L -- local time is %T. You are number %N out of a maximum of %M. All transfers are logged. If your FTP client crashes or hangs shortly after login please try using a dash (-) as the first character of your password. This will turn off the informational messages that may be confusing your FTP client. Please send any comments to %E.