So the file "/var/mail/username" is a "system inbox" for the user, typically a
flat file that will accept new mail no matter what as long as it isn't too
large, which would indicate that the user's mailbox is full.
Some of the early text clients, mutt etc. would move any mail in the
"/var/mail/
this is handled in a couple of different ways
please note this is only for virtual users and assumes you are running
postfix/dovecot
through postfix (first)
see main.cf :
# SOFT BOUNCE
#
# The soft_bounce parameter provides a limited safety net for
# testing. When soft_bounce is enabled
