cron /etc/cron.daily/couriergrey is also broken:
Could not open database at /var/cache/couriergrey/deliveryattempts.gdbm
it runs as user daemon, instead it should use user "courier"
cron /etc/cron. daily/couriergr ey is also broken:
Could not open database at /var/cache/ couriergrey/ deliveryattempt s.gdbm
it runs as user daemon, instead it should use user "courier"