/usr/ is in gosa-plugin-mailaddress 0.99.5-2+deb9u1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/gosa-plugin-mailaddress/
/usr/share/
/usr/share/doc/
/usr/share/doc/gosa-plugin-mailaddress/changelog.Debian.gz
/usr/share/doc/gosa-plugin-mailaddress/changelog.gz
/usr/share/doc/gosa-plugin-mailaddress/copyright
/usr/share/gosa/
/usr/share/gosa/locale/
/usr/share/gosa/locale/plugins/
/usr/share/gosa/locale/plugins/mailaddress/
/usr/share/gosa/locale/plugins/mailaddress/locale/
/usr/share/gosa/locale/plugins/mailaddress/locale/de/
/usr/share/gosa/locale/plugins/mailaddress/locale/de/LC_MESSAGES/
/usr/share/gosa/locale/plugins/mailaddress/locale/de/LC_MESSAGES/messages.po
/usr/share/gosa/locale/plugins/mailaddress/locale/en/
/usr/share/gosa/locale/plugins/mailaddress/locale/en/LC_MESSAGES/
/usr/share/gosa/locale/plugins/mailaddress/locale/en/LC_MESSAGES/messages.po
/usr/share/gosa/locale/plugins/mailaddress/locale/messages.po
/usr/share/gosa/plugins/
/usr/share/gosa/plugins/admin/
/usr/share/gosa/plugins/admin/groups/
/usr/share/gosa/plugins/admin/groups/mailaddress/
/usr/share/gosa/plugins/admin/groups/mailaddress/class_groupMail.inc
/usr/share/gosa/plugins/admin/groups/mailaddress/mailaddress.tpl
/usr/share/gosa/plugins/admin/groups/mailaddress/paste_mailaddress.tpl
/usr/share/gosa/plugins/personal/
/usr/share/gosa/plugins/personal/mailaddress/
/usr/share/gosa/plugins/personal/mailaddress/class_mailAccount.inc
/usr/share/gosa/plugins/personal/mailaddress/copypaste.tpl
/usr/share/gosa/plugins/personal/mailaddress/generic.tpl