iRedMail Intentional policy rejection
On an iRedMail, when receiving an email from steam, the mail server rejects the email with the error message “Recipient address rejected:…
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How to install MySQL 5.6 on CentOS 7
CentOS 7 come with MariaDB, a drop-in replacement for MySQL. In some cases, you need to install the Oracle MySQL server. Download…
How to access SSH Terminal in Plesk Server
Plesk server has an SSH Terminal feature, that allows you to access the server console and run commands. This is useful when…
How to Add Expires Headers in WordPress
What is Expires Headers Expires headers are a type of HTTP header that indicates how long until cached copies of site resources…
Run rsync if not running using cronjob
I want to rsync files from one server to another server every 5 minutes, but only want to start the rsync if…
How to Install memcached on CentOS Plesk Server
Install memcached daemon with command yum install Memcached Enable memcached to start on boot systemctl enable memcached Start memcached systemctl start memcached…
smartmontools
smartmontools is used to check the health of hard disks. To install smartmontools on CentOS, run yum install smartmontools The command line…
How to verify installed packages on Ubuntu/Debian
To verify the integrity of installed packages, you can use debsums utility. First of all install debsums with command apt install -y…
sleep-monitor system is about to suspend
On a remote Linux server running XFCE desktop, the server goes down randomly, on monitoring /var/log/syslog, i found the following message Jan…
Plesk Error: There is no IP address X in the pool
After a Plesk server crash, I migrated files over to a new server. When I log in to Plesk and click any…
View Past Performance Data With sar
sysstat stores past data in the directory /var/log/sa – for RHEL based OS /var/log/sysstat – for Debian based OS Each day log…
How To Install ionCube on Ubuntu 20.04
ionCube is PHP extension that is used to load ionCube encoded PHP files. ionCube is used to protect commercial PHP scripts by…