During the last week, all of the problems we were facing were solved. We now have a fully functional proxy server plus all of the incoming/outgoing ownmailbox emails function normally.
I also finished the update of the proxy to Debian Stretch. Everything was tested multiple times and the pull requests were merged successfully. You can read my final report here: https://gist.github.com/giorgos314/c718abc42c57f2e691ebaf40406df31a -- George Pipilis
