have now installed sysvinit-core and purged systemd as a workaround seems that there is some misconfiguration between systemd and dovecot
On 07.07.19 14:51, Debian Bug Tracking System wrote: > Thank you for filing a new Bug report with Debian. > > You can follow progress on this Bug here: 931545: > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=931545. > > This is an automatically generated reply to let you know your message > has been received. > > Your message is being forwarded to the package maintainers and other > interested parties for their attention; they will reply in due course. > > Your message has been sent to the package maintainer(s): > Dovecot Maintainers <dove...@packages.debian.org> > > If you wish to submit further information on this problem, please > send it to 931...@bugs.debian.org. > > Please do not send mail to ow...@bugs.debian.org unless you wish > to report a problem with the Bug-tracking system. >