I've been searching in almost every message in the forum and in manual, but I could not find anything about this What does client traffic quota really limit?: Only Web traffic or Web traffic + mail traffic? Looking at /usr/local/ispconfig/server/cron_daily.php, it seems is only web traffic, but I'm not 100% sure. Because of this I know FTP traffic is not accounted yet, but as mail traffic is, shouldn't it be added to web traffic? That was the behaviour of ISPConfig 2, and it seems logical to me.