Virtualenv was for me until 2020 a python-default tool for creating isolated virtual environments for python projects.
Virtualenv was always easy to handle and known as a mature pythonic tool under python developers.
But now, I think pipenv is stable and known enough to switch to it.
A lot of different tools are around the internet which can be useful to determine different SMTP troubles.
The most of them are very useful but they are all reachable over the internet and don’t provide any kind of API for integration of monitoring or complex integration in (pre)deployment pipelines.
This is a short overview of some command line tools for developers and administrators, to check the e-mail flow during developing, emulate and intercept outgoing emails and afterwards for maintaining the setups.
Apache Subversion often abbreviated as SVN is a software versioning and revision control system. This post was written during a integration and PoC of SVN in a deployment stages.[Read more…]
CentOS 8 has PostgreSQL within the default repositories but its’ a bit outdated – currently during writing of this post, it’s the version: 10.6.
The currently official version of PostgreSQL is version: 12.1
So this instruction was written to install the current actual version of PostgreSQL 12.1 on CentoOS 8 system.
Let’s get started![Read 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).