Don't have Telegram yet? Try it now!
https://ixnfo.com/en/solution-mod_auth_file-1-0-unable-to-use-world-readable-authuserfile-etc-proftpd-ftpd-passwd.html
Solution "mod_auth_file/1.0: unable to use world-readable AuthUserFile /etc/proftpd/ftpd.passwd"