I've doublechecked my work and I'm sure I have the user, password and hostname (backup.dreamhost.com) correct. However, I must still have something wrong. I still cannot get Filezilla to log into the backups user.
I can still successfully use Filezilla to log into my regular ftp user account using either ftp or sftp.
With my backups user however, it's a different matter. If I try to log in using ftp, after the password is submitted, Filezilla reports a 530 response (Login incorrect) from the server and then shows a "Could not connect to the server" error and stops. If I try using sftp, after the password is submitted, Filezilla shows three errors in a row, "Authorization failed", "Critical error", and "Could not to connect to the server" and stops.
As I said, I've doublechecked user, password and hostname. So, I don't know if I should triplecheck these or if there might be another setting to check. I'm sure it will end up being something obvious I'm missing, but I'm currently at a total loss. Any help would be appreciated.