/usr/lib/python2.6/dist-packages/zope.sendmail-3.7.4.egg-info/requires.txt is in python-zope.sendmail 3.7.4-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.6/dist-packages/zope.sendmail-3.7.4.egg-info/../../../../share/pyshared/zope.sendmail-3.7.4.egg-info/requires.txt