/usr/lib/ is in python-mailutils 1:2.99.99-1ubuntu2.
This file is owned by root:root, with mode 0o755.
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/usr/lib/python2.7/
/usr/lib/python2.7/dist-packages/
/usr/lib/python2.7/dist-packages/mailutils/
/usr/lib/python2.7/dist-packages/mailutils/auth.py
/usr/lib/python2.7/dist-packages/mailutils/util.py
/usr/lib/python2.7/dist-packages/mailutils/mailbox.py
/usr/lib/python2.7/dist-packages/mailutils/__init__.py
/usr/lib/python2.7/dist-packages/mailutils/attribute.py
/usr/lib/python2.7/dist-packages/mailutils/registrar.py
/usr/lib/python2.7/dist-packages/mailutils/folder.py
/usr/lib/python2.7/dist-packages/mailutils/stream.py
/usr/lib/python2.7/dist-packages/mailutils/secret.py
/usr/lib/python2.7/dist-packages/mailutils/mailcap.py
/usr/lib/python2.7/dist-packages/mailutils/header.py
/usr/lib/python2.7/dist-packages/mailutils/sieve.py
/usr/lib/python2.7/dist-packages/mailutils/body.py
/usr/lib/python2.7/dist-packages/mailutils/address.py
/usr/lib/python2.7/dist-packages/mailutils/url.py
/usr/lib/python2.7/dist-packages/mailutils/nls.py
/usr/lib/python2.7/dist-packages/mailutils/message.py
/usr/lib/python2.7/dist-packages/mailutils/c_api.so
/usr/lib/python2.7/dist-packages/mailutils/mailer.py
/usr/lib/python2.7/dist-packages/mailutils/mime.py
/usr/lib/python2.7/dist-packages/mailutils/error.py
/usr/lib/python2.7/dist-packages/mailutils/envelope.py
/usr/lib/python2.7/dist-packages/mailutils/filter.py