Hi everybody, for debugging POST requests to a specific vhost configured with ISPConfig (installed on Ubuntu 20.04 LTS) I want to use apaches dumpio module. Therefore I enabled it with "a2enmod dump_io" and added these lines to the corresponding vhost config ("/etc/apache2/sites-enabled/100-the-domain.de.vhost"): DumpIOInput On DumpIOOutput On LogLevel dumpio:trace7 After restarting apache I made POST requests to the domain but nothing is written to the corresponding error.log (/var/log/ispconfig/httpd/the-domain.de/error.log) I tried the same on a stock Ubuntu 20.04... also enabled the module, added these 3 line to a specific vhost config, restarted apache, made a post request and dumpio trace output was found in the error.log as expected. Any hint what is different in the ISPConfig Apache config that prevents dumpio writing to error.log? Thx in advance T0mc@