Hello ! I'm trying to copy passwords from an older server, that used md5crypt/salted passwords (they start with "$1$"), to a newer server (running Ubuntu 20.04). It doesn't work (I tried it first on a user ispconfig client account). I understand the new passwords are encrypted by using SHA512 ($6$), but I hoped it would accept md5 passwords. (I checked that php supports CRYPT_MD5, but I guess passwords, like for ftp accounts, aren't all checked through php ?) What should I know / where should I look ? Thanks.