mysql uninstall and reinstall invoke-rc.d: initscript dkimproxy, action "start" failed. dpkg: processing dkim

invoke-rc.d: initscript dkimproxy, action "start" failed.
dpkg: Error processing dkimproxy (--configure):
 Subprocess installed post-installation script returned error number 2
dpkg: Dependency issues prevent configuration of dtc-toaster from continuing:
 dtc-toaster depends on dkimproxy; however:
  Package dkimproxy has not been configured.
dpkg: Error processing dtc-toaster (--configure):
 Dependency issue - still not configured
No apport report was written because the MaxReports limit has been reached.
                                                    No apport report was written because the MaxReports limit has been reached.
                        An error occurred while processing:
 dkimproxy
 dtc-toaster
E: Sub-process /usr/bin/dpkg returned an error code (1)


solve:
Enter the /var/lib/dpkg/info/ directory, delete the relevant files of the software you want to install, and then reinstall
 sudo aptitude install mysql-server-5.6