File imp.conf of Package horde5-imp

<Directory /usr/share/php*/PEAR/www/horde/imp/config>
 Deny from all
</Directory>
<Directory /usr/share/php*/PEAR/www/horde/imp/lib>
 Deny from all
</Directory>
<Directory /usr/share/php*/PEAR/www/horde/imp/locale>
 Deny from all
</Directory>
<Directory /usr/share/php*/PEAR/www/horde/imp/templates>
 Deny from all
</Directory>