Updated : Dec 21, 2017 in Email

Blocking reception of full TLDs

Intro: Lately I was receiving a lot of spam from a '.date' TLD sources and wanted to block all these emails using Postfix. Here is…

Updated : Dec 11, 2017 in Email

OpenDKIM doesn’t start after Upgrade from Jessie to Stretch

Introduction: After having done a dist-upgrade fo Jessie to Stretch OpenDKIM didn't start any more. After research I found the answer which worked for me…

Updated : Nov 29, 2017 in Apache

Verifying PHP syntax.

After an upgrade from php 5.6 to 7.0/7.1 many php scripts gave me trouble. So I looked for a way to test the php syntax…

Updated : Nov 20, 2017 in Linux

Some Zabbix tools

Introduction: In order to debug some Zabbix problems here are some tools I gathered to help. Requirements: Installation of the package zabbix-get in the monitoring…

Updated : Nov 09, 2017 in Apache

piwik: Could not open input file: ./console

Introduction: In order to know the location of the visits your website received before you started using Piwik with GeoIP you need to run a…

Updated : Sep 08, 2017 in GlusterFS

Prepare Debian Stretch for Installing GlusterFS 3.12

In order to install this version of GlusterFS we need to add the repositories: Ref: https://download.gluster.org/pub/gluster/glusterfs/LATEST/Debian/ echo deb [arch=amd64] http://download.gluster.org/pub/gluster/glusterfs/3.12/LATEST/Debian/stretch/apt stretch main > /etc/apt/sources.list.d/gluster.list wget…

Updated : Sep 02, 2017 in Email

Transferring IMAP account mails and folders to another IMAP account on another server

Introduction: The other day I was asked to install a completely new email server and transfer all the email accounts from the old mail server…

Updated : Aug 29, 2017 in Linux

Installing Filebeat, Logstash, ElasticSearch and Kibana in Ubuntu 14.04

PREPARATIONS #Ref: https://www.elastic.co/guide/en/logstash/current/installing-logstash.html First install Java 8 in Ubuntu 14.04 # Ref: https://www.liquidweb.com/kb/how-to-install-oracle-java-8-on-ubuntu-14-04-lts/ apt-get install python-software-properties software-properties-common apt-add-repository ppa:webupd8team/java apt-get update apt-get install oracle-java8-installer java…

Updated : Jul 04, 2017 in Linux

TCP Proxying using socat

Introduction: Lately I've had to create a pure bidirectional TCP Proxy for a project. For this there are lots of alternatives like haproxy, nginx, cat…

Updated : May 23, 2017 in Atlassian

Disabling the admin security password confirmation in Jira and Confluence

Introduction: Although in Jira and Confluence the WebSudo, requesting the confirmation of the administrator's password, are neat security features if you are working in a…