[BlueOnyx:21585] Rejecting external emails to admin

[Ernie]

Hi,
is there any way to reject external email trying to come in to admin@ (some domain)
via sendmail?

Because admin is a reserved username in BX, there should only be internal
emails going to that box. Unforunately spammers try admin@ all too often
nowadays and when I go to clear the admin mbox it's always flooded with junk
from Internet spam. So I thought it would be nice to close off that address
to external SMTP.


- Ernie.