Recent content on Mynacol's Blog
Earlier this year I brought an old laptop to my home my grandfather once gave. It is a relict from roughly 1999, with which I’ve already played around some nine years ago. Prior to 38C3 I had the idea to bring it to the congress so people could mess around with it. In the end, I was the one messing around with it, fighting to get some operating systems installed on this poor thing.
Since some weeks I got a strange error message from the Nextcloud client on startup: Changes in synchronized folders could not be tracked reliably . At first, I ignored it, but I noticed Nextcloud wouldn’t sync local changes reliably to the server. After I lost a git commit (yes, I sync some git repos over Nextcloud), I took the issue seriously. I knew this was related to a Linux feature…
Mail clients are notorious for sending information not really required for mail conversations. They leak their identity and version number, sometimes even the operating system in User-Agent and X-Mailer headers. They leak the locally set time zone in the Date header. And sometimes they leak the private IP addresses during mail sending. Here I document some settings to hide this information in my…
I’m using NixOS since over a year for most of my server stuff and I’m loving it. One of the missing services was my email setup, originally deployed on Debian 10, later upgraded to Debian 11. I followed a setup guide and was quite happy, tweaking it over the years to my needs. Roughly, the software stack consists of Postfix as the MTA (“SMTP server”), Dovecot as the MDA…