Can see mailbox and virtual server passwords?
When this option is set to Yes, server administrators will be able to
see the current passwords for mail / FTP users and their own virtual server,
when they are known to Virtualmin. You may want to select No to hide
mailbox passwords, particularly those that have been selected by mailbox
users.
Regardless of this setting, the master administrator and resellers will always
be able to see mailbox and virtual server passwords.