/usr/share/doc/esmtp-run/changelog.Debian.gz is in esmtp-run 1.2-6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/esmtp-run/../esmtp/changelog.Debian.gz
/usr/share/doc/esmtp-run/../esmtp/changelog.Debian.gz