package:sendmail-bin:8.15.2-13
Setting up sendmail-bin (8.15.2-13) ...
Saving old /etc/mail/sendmail.cf as /etc/mail/sendmail.cf.old ...
start-stop-daemon: matching only on non-root pidfile /var/run/sendmail/mta/sendmail.pid is insecure
dpkg: error processing package sendmail-bin (--configure):
 installed sendmail-bin package post-installation script subprocess returned error exit status 2