/usr/share/doc/maildrop/html/ is in maildrop 2.7.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/maildrop/html/deliverquota.html
/usr/share/doc/maildrop/html/lockmail.html
/usr/share/doc/maildrop/html/mailbot.html
/usr/share/doc/maildrop/html/maildir.html
/usr/share/doc/maildrop/html/maildiracl.html
/usr/share/doc/maildrop/html/maildirkw.html
/usr/share/doc/maildrop/html/maildirmake.html
/usr/share/doc/maildrop/html/maildirquota.html
/usr/share/doc/maildrop/html/maildrop.html
/usr/share/doc/maildrop/html/maildropex.html
/usr/share/doc/maildrop/html/maildropfilter.html
/usr/share/doc/maildrop/html/maildropgdbm.html
/usr/share/doc/maildrop/html/makedat.html
/usr/share/doc/maildrop/html/makemime.html
/usr/share/doc/maildrop/html/manpage.css
/usr/share/doc/maildrop/html/reformail.html
/usr/share/doc/maildrop/html/reformime.html
/usr/share/doc/maildrop/html/rfc2045.html
/usr/share/doc/maildrop/html/rfc822.html