Unpacking libgmime-2.0-2a (from .../libgmime-2.0-2a_2.2.25-2_amd64.deb) ...
Selecting previously deselected package libsieve2-1.
Unpacking libsieve2-1 (from .../libsieve2-1_2.2.6-1_amd64.deb) ...
Selecting previously deselected package dbmail.
Unpacking dbmail (from .../dbmail_2.2.17-1_amd64.deb) ...
Selecting previously deselected package dbmail-pgsql.
Unpacking dbmail-pgsql (from .../dbmail-pgsql_2.2.17-1_amd64.deb) ...
Processing triggers for ureadahead ...
ureadahead will be reprofiled on next reboot
Processing triggers for man-db ...
Setting up libgmime-2.0-2a (2.2.25-2) ...
Setting up libsieve2-1 (2.2.6-1) ...
Setting up dbmail (2.2.17-1) ...
chown: cannot access `/etc/dbmail/dbmail.conf': No such file or directory
dpkg: error processing dbmail (--configure):
 subprocess installed post-installation script returned error exit status 1