tags 859705 moreinfo thanks I’m not sure how to reproduce this issue. jessie and stretch are oldstable and oldoldstable now. A few things that could be suspicious: APT reporting ‘1 not fully installed or removed’; the message ‘invoke-rc.d: initscript opendkim, action "start" failed’, which points to SysV init rather than systemd; you mentioning doing only a partial upgrade.
Tagging this ‘moreinfo’ for now.
