Hi,
Definitely Kloxo-MR v.7 has a problem with ftp connection. I installed it twice new/fresh Kloxo-MR v.7 and both times the same problem with FTP. I use CuteFTP to connection via FTP.
When I want to connect via FTP I get error "530 Login authentication failed".
I tried to add a new FTP user but the problem is the same. The OS is CentOS 6.9 (Final).
I tried using the command 'sh /script/fixmail', 'sh /script/fix-all', 'sh /script/cleanup' and I use 'ftp passive mode' but the problem is the same.
Pure-ftpd running well with 'sh /script/restart-ftp -y'.