CSS content IP Leak
Hello. I am new user evaluating mailbox.org.
I am currently testing the resistance of the webmail environment against IP tracking. Unfortunately, when I ran some tests via https://www.emailprivacytester.com/ I notice my IP leaks through CSS Content being loaded
( In the <body> of the HTML part, place a tag as follows:<p style="content:url('http://TRACKING_URL/')"></p> )
In other words, even with automatic displaying of external images being off per default, it is still possible to track my WAN IP when using the Mailbox.org webmail.
Can this be fixed?