All of these services are tunning with chroot ENABLED. Check your $queue_directory/etc/resolv.conf file again.
> smtp inet n - y - - smtpd > pickup unix n - y 60 1 pickup > cleanup unix n - y - 0 cleanup > tlsmgr unix - - y 1000? 1 tlsmgr > rewrite unix - - y - - trivial-rewrite > bounce unix - - y - 0 bounce > defer unix - - y - 0 bounce > trace unix - - y - 0 bounce > verify unix - - y - 1 verify > flush unix n - y 1000? 0 flush > smtp unix - - y - - smtp > relay unix - - y - - smtp > showq unix n - y - - showq > error unix - - y - - error > retry unix - - y - - error > discard unix - - y - - discard > lmtp unix - - y - - lmtp > anvil unix - - y - 1 anvil > scache unix - - y - 1 scache Wietse