Day: January 27, 2018

How to disable the www-data user to send emails with postfix

Sometimes an insecure configuration allows spammer to use the www-data user to send emails with you postfix server. Normally this is the case, when you get a bunch of error email from your mailserver, that some emails from www-data@hostname.tld could not be delivered. To be sure, that this situation cannot exist, you can add the