/usr/lib/python2.7/dist-packages/Mailnag/ is in mailnag 1.1.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/Mailnag/__init__.py
/usr/lib/python2.7/dist-packages/Mailnag/common/
/usr/lib/python2.7/dist-packages/Mailnag/common/__init__.py
/usr/lib/python2.7/dist-packages/Mailnag/common/accounts.py
/usr/lib/python2.7/dist-packages/Mailnag/common/config.py
/usr/lib/python2.7/dist-packages/Mailnag/common/credentialstore.py
/usr/lib/python2.7/dist-packages/Mailnag/common/dist_cfg.py
/usr/lib/python2.7/dist-packages/Mailnag/common/exceptions.py
/usr/lib/python2.7/dist-packages/Mailnag/common/i18n.py
/usr/lib/python2.7/dist-packages/Mailnag/common/plugins.py
/usr/lib/python2.7/dist-packages/Mailnag/common/subproc.py
/usr/lib/python2.7/dist-packages/Mailnag/common/utils.py
/usr/lib/python2.7/dist-packages/Mailnag/configuration/
/usr/lib/python2.7/dist-packages/Mailnag/configuration/__init__.py
/usr/lib/python2.7/dist-packages/Mailnag/configuration/accountdialog.py
/usr/lib/python2.7/dist-packages/Mailnag/configuration/configwindow.py
/usr/lib/python2.7/dist-packages/Mailnag/configuration/plugindialog.py
/usr/lib/python2.7/dist-packages/Mailnag/daemon/
/usr/lib/python2.7/dist-packages/Mailnag/daemon/__init__.py
/usr/lib/python2.7/dist-packages/Mailnag/daemon/conntest.py
/usr/lib/python2.7/dist-packages/Mailnag/daemon/idlers.py
/usr/lib/python2.7/dist-packages/Mailnag/daemon/imaplib2.py
/usr/lib/python2.7/dist-packages/Mailnag/daemon/mailchecker.py
/usr/lib/python2.7/dist-packages/Mailnag/daemon/mailnagdaemon.py
/usr/lib/python2.7/dist-packages/Mailnag/daemon/mails.py
/usr/lib/python2.7/dist-packages/Mailnag/plugins/
/usr/lib/python2.7/dist-packages/Mailnag/plugins/dbusplugin.py
/usr/lib/python2.7/dist-packages/Mailnag/plugins/libnotifyplugin.py
/usr/lib/python2.7/dist-packages/Mailnag/plugins/soundplugin.py
/usr/lib/python2.7/dist-packages/Mailnag/plugins/spamfilterplugin.py
/usr/lib/python2.7/dist-packages/Mailnag/plugins/userscriptplugin.py