turns out the above DOES work. Just had to fix the dovecot error by installing cyrus-imapd to get /etc/pam.d/pop and then symbolic link that file to pop3 in same directory.
Digital Ocean tutorial explains how to set up dovecot and postfix so you can for example read internal emails sent from cron jobs etc to root.
can anyone help me get this working please?
my postfix config is
root@electron# postconf -n
alias_database = hash:/etc/aliases
alias_maps =...