My daily and weekly status updates from Root stopped appearing in my main inbox a while back, (probably when I switched from Sendmail to SSMTP. ) but they did appear in my secondary email account as this was the bounce-back address for email failures, as failure reports.
Issue seemed to be that the Root mail box was not reachable anymore. Attempts to amend an alias to have them delivered to a live account failed as most of the method listed for amending Root’s alias are for Sendmail.
A bit of googling found this post http://possiblelossofprecision.net/?p=591 and identified the correct file to edit as /ETC/MAIL.RC and add
set append dot save ask crt
ignore Received Message-Id Resent-Message-Id Status Mail-From Return-Path Via
alias root yournewrootmailboxhere@nowhere.com
to finally restore my housekeeping updates from the system