List passwords

I need to check all the passwords on the server. I just had a email user account with no password in it…
send out spam… I don’t know how that happened… But at this point I feel the need to inspect all the passwords and make sure they are not too simple…

It looks like a command line API should be able to do it, but I can find it explained…

If it is not to must trouble… And I posted this as private… a way to list passwords in public could be scary

Thanks
Don