I have found the inheritance method, just add `-d` option.
But I can't find the way to prevent 640. I know it's not really read by all others, but sshd will prevent login with error `error: Permissions 0640 for '/etc/ssh/ssh_host_rsa_key' are too open.`. I have tried a lot of commands, but still can't resolve this.
I use plain text, and I even enable "block external image" on the client, and I would advise others to do the same, because there is just too much phishing with email..
But I can't find the way to prevent 640. I know it's not really read by all others, but sshd will prevent login with error `error: Permissions 0640 for '/etc/ssh/ssh_host_rsa_key' are too open.`. I have tried a lot of commands, but still can't resolve this.