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Claudio Kuenzler
Claudio Kuenzler
Claudio has been writing way over 1000 articles on his own blog since 2008 already. He is fascinated by technology, especially Open Source Software. As a Senior Systems Engineer he has seen and solved a lot of problems - and writes about them.
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Postfix logo
News

Postfix 3.6 changes terminology: white and black are deprecated

Twitter flagged BBC
News

BBC News – the newest hacking site (according to Twitter)

Kodi 19.0 Matrix
News

Mediacenter Kodi releases version 19.0 "Matrix"

HTTP dataflow
Articles

Maximum HTTP request header size defaults compared across web servers

Grafana not showing data graph
Tutorials

How to work around the nagios-plugins check_disk perfdata bug in CentOS

Linux
News

Linux Kernel 5.11 "Valentine's Day" released and 5.12 development delayed

Znuny OTRS fork
News

The end of OTRS Community Edition – but here comes Znuny (and other forks)!

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News

Docker donates the Docker Hub codebase Distribution (former Registry) to CNCF

How DNSBL works
Articles

What is a DNSBL (DNS Black List) and how do they work against spams?

Introduction and how to install Varnish Cache
Articles

Introduction and how to install Varnish Cache on Linux

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Postfix 3.6 changes terminology: white and black are deprecated

BBC News – the newest hacking site (according to Twitter)

Mediacenter Kodi releases version 19.0 "Matrix"

Maximum HTTP request header size defaults compared across web servers

How to work around the nagios-plugins check_disk perfdata bug in CentOS