May  6 09:44:54 hoornfive postfix/postalias[2618]: fatal: open /etc/aliases.db: Permission denied
May  6 09:54:30 hoornfive postfix[2744]: error: to submit mail, use the Postfix sendmail command
May  6 09:54:30 hoornfive postfix[2744]: fatal: the postfix command is reserved for the superuser
May  6 09:54:40 hoornfive postfix/postfix-script[2751]: error: unknown command: 'restart'
May  6 09:54:40 hoornfive postfix/postfix-script[2752]: fatal: usage: postfix start (or stop, reload, abort, flush, check, status, set-permissions, upgrade-configuration)
May  6 10:38:49 hoornfive postfix/sendmail[3704]: fatal: usage: sendmail [options]
May  6 10:39:00 hoornfive postfix/sendmail[3706]: fatal: usage: sendmail [options]
May  6 10:39:58 hoornfive postfix/sendmail[3726]: fatal: usage: sendmail [options]
May  6 10:40:07 hoornfive postfix/sendmail[3727]: fatal: usage: sendmail [options]
May  6 10:40:16 hoornfive postfix/sendmail[3730]: fatal: usage: sendmail [options]