In this post I am sharing a trick in which we will assign DKIM signature like Sendgrid do.The method is not excatly same but the task can be accomplished.I was getting “no signing table” error.Because of which DKIM-Signature was not attaching in recipient’s email header. My application mailer was using gmail id in from: field […]
Linux
grep command to show lines after and before the keyword
In this post,I am sharing a useful option with linux grep command.In this tutorial, we will use grep command to show lines after and before the keyword . As a Linux System Engineer, sometimes I get the requirement to print lines above and below of a particular keyword in the file. Generally if you only […]
Install vshell frontend on Nagios Core 4 Ubuntu 12.04 LTS
In this tutorial we will learn about, how to install vshell frontend on Nagios Core 4 Ubuntu 12.04 LTS. Nagios vshell is php based web interface for Nagios Core.It is lightweight and easy to customize. To get the details of Nagios Vshell , here is the link. To install vshell frontend on Nagios Core 4 […]
Install and configure nagios core 4 on Ubuntu 12.04 LTS
In this tutorial we will install and configure nagios core 4 on Ubuntu 12.04 LTS. Nagios Core 4 has recently been released,at the time of writing this post Nagios core 4.0.2 was available. Nagios is one of the most popular,reliable and robust Monitoring System.You can find number of plugins to monitor the network and server […]
How to delete mail queue in Postfix
In this tutorial we will learn, how to delete mail queue in Postfix .To clear the mail queue in Postfix, we will use the command called postsuper . Abbreviation of postsuper is Postfix superintendent . postsuper command can only be run by super user of the system eg. root . Postsuper command is used for […]
Install Mariadb 5.5 on Ubuntu 12.04 LTS
In this tutorial we will learn, how to install Mariadb 5.5 on Ubuntu 12.04 LTS. After the Sun Microsystems has been acquired by Oracle, we got a new fork of MySQL i.e MariaDB . MariaDB is led by its original developers. MariaDB has XtraDB storage engine for replacing InnoDB .It also has new storage engine […]
Recent Comments