mail to all@domain.com password protected

[Marco Leeflang]

is it possible to secure mail to [EMAIL PROTECTED] with a password so only
people who knows the user/password or just the password could mail to
this emailaddress.
.qmail-all will hold all users within this domain.
i use vchkpwd/vpopmail with qmailadmin. i can use vpopbull , which works
ok with plain text, but i also want send attachements to everyone.

marco leeflang