On Thu, 07 Mar 2019 08:33:57 +0100 Nico Haase <deb...@nicohaase.de> wrote: > Package: systemd > Version: 241-1~bpo9+1 > Severity: normal > > Dear Maintainer, > > this morning, apticron reminded me (once more) to upgrade some packages from > stretch-backports. These included dovecot-core and systemd (and others). > After having installed all of them, Dovecot refused to start. > > The following lines were reported in daemon.log: > > Mar 7 07:35:25 host systemd[1]: Started Dovecot IMAP/POP3 email server. > Mar 7 07:35:25 host systemd[30913]: dovecot.service: Failed to set up mount > namespacing: Permission denied > Mar 7 07:35:25 host systemd[30913]: dovecot.service: Failed at step > NAMESPACE spawning /usr/sbin/dovecot: Permission denied > Mar 7 07:35:25 host systemd[1]: dovecot.service: Main process exited, > code=exited, status=226/NAMESPACE > Mar 7 07:35:25 host systemd[1]: dovecot.service: Failed with result > 'exit-code'. > > I have no clue how to solve this, as there a no canonical sources for that > messages. The only obvious thing was to downgrade systemd to 232-25+deb9u9 > again, which let me start Dovecot again. > > If there is anything I can do to help you spot the error, please ask. I'm not > that experienced with systemd, but I'd be able to run upgrades or other > commands that could provide more information.
https://support.plesk.com/hc/en-us/articles/115001908314-Unable-to-start-Dovecot-Failed-at-step-NAMESPACE-spawning-usr-sbin-dovecot-Permission-denied is a similar problem. Might be worth checking if apparmor is installed and active. -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth?
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