If you are upgrading from OpenSMTPD version 201303011853 or earlier, please 
follow the procedure below to update the permissions on the OpenSMTPD
spool directories:

  1. Stop 'smtpd' service:

     # %%PREFIX%%/etc/rc.d/smtpd stop

  2. Update permissions:

     # chown -R _smtpq:wheel /var/spool/smtpd/corrupt
     # chown -R _smtpq:wheel /var/spool/smtpd/purge
     # chown -R _smtpq:wheel /var/spool/smtpd/queue
     # chown -R _smtpq:wheel /var/spool/smtpd/temporary

  3. Start 'smtpd' service:

     # %%PREFIX%%/etc/rc.d/smtpd start