I have installed a server from here: https://www.howtoforge.com/perfect-...2-php-mysql-pureftpd-bind-dovecot-ispconfig-3 ... and RoundCube from here: https://www.howtoforge.com/using-roundcube-webmail-with-ispconfig-3-on-debian-wheezy-apache2 Everything works fine, except when I receive an e-mail from MAILLER-DAEMON. This email can't be read from RoundCube, when is accessed I receive a blank screen. In squirrel mail system, it's ok, I can see it. Thanks