Linux, programming and more
In a previously post I updated my webmail installation on a self hosted mail system to the latest release. This post will cover SPF (Sender Policy Framework) which is responsible for email authentication during the delivery of the emails.
For you own domains you should set DNS-based TXT records which described you policy and the systems(ip-addresses or ranges) which are allowed to handle e-mail traffic for your domain(s).
The official Docker documentation is more than enough for the installation and configuration.
For the quick jump into the docker world I wrote some references from the official documentation down.
So the most important steps from the requirements and the main guideline for the installation:
– Docker requires a 64-bit installation
– Kernel must be 3.10 at minimum
UnattendedUpgrades is since Debian 9 a part of default installation.
Only with graphical desktop environment, its activated by default.
For server systems, the following basic configuration is required:
This post describes the upgrade process to Debian 10 aka Buster which isn’t released yet.
Official release date is not announced for now but is to be expected in a second or third quarter of 2019.
For everyone who would like to profit from PHP 7.3 and other new and mostly stable software now,
can perform the upgrade already now.
After Debian-Upgrade to version 9, usual active FTP-connection-support was not more present as expected.
All connections from a FTP-client run into a error message and connection-hang without the remote directory listing: [Read more…]