Gut an ls -lR of /var/spool shows they are an exact copy of the wheezy files. With mine own by me.
What did I screw up now. I had noticed my kmail spam folder was filling up because my cron scripts aren't running as scheduled. Otherwise I haven't touched it since installing stretch. Any clues? Making me a member of the group shown made no diff, and it worked a treat under wheezy. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene>