Fix instructions for Postfix integration
requested to merge sfindeisen/mailman-suite-doc:42-Postfix-integration-instructions-lead-to-broken-mail-delivery-to-root-user into master
The old instructions effectively disable /etc/aliases file and break local mail delivery, including to the root user. With this fix, local system accounts and their aliases will be enabled and will take precedence over Mailman's mappings.
Closes #42 (closed)