On 25.09.2018 22:38, Jorge Bastos wrote:

Sep 25 21:09:13 fastweb roundcube: <ba0aem8f> PHP Error: Maximum nesting level exceeded (xdebug.max_nesting_level=256) in /home/hosting/xxxx.pt/webmail/program/lib/Roundcube/rcube_washtml.php on line 447 (GET /webmail/?_task=mail&_caps=pdf%3D0%2Cflasjjjh%3D0%2Ctiff%3D0%2Cwebp%3D1&_uid=59688144&_mbox=INBOX&_action=show)

That message informs you that Roundcube wasn't able to parse HTML message (malformed or very big) with this PHP setting. Increase the limit or live with that.