Determining Linux CPU load
In many cases, it’s inportant to determine the average load of the server, so one can decide if an expansion of resources is needed. The easyest way to determine CPU load inRead More…
All posts by pityu
phpList – Database error 1366 while doing query Incorrect integer
If you upgrade phplist or import an old database, it will most probably show an error message similar or exact to the one in the picture below. The issue is that thereRead More…
Postscreen
Postscreen is a handy feature of Postfix 2.9 and on, if you want to prevent degrading the performance of your server box with frequent external invalid requests. It actually implements a setRead More…
Enabling compression in Nginx
Compression in web servers is used to improve website loading performance, and is often measured and evaluated by search engines. Enabling gzip compression in Nginx is quite easy, since it’s already thereRead More…
Enable compression in Apache
This is a short article mostly optimized for use with WordPress. First, very simply insert this into your virtual host config file (probably in /etc/httpd/conf.d or in /etc/httpd/conf/httpd.conf if you’re using theRead More…
Postfix 3 on Centos 6 and 7
One problem that can comes up with the fantastic Centos Linux distro is that it sticks to the proven but also old packages. I needed some newer features several times. One ofRead More…
Adding a DMARC record for mail services
DMARC (stands for Domain-based Message Authentication, Reporting & Conformance) is a TXT record implenented in a _dmarc subdomain on your DNS server that after DKIM and SPF are implemented ultimatively advises theRead More…
How to implement a SPF record for mail servers
Implementing Sender Policy Framework (SPF) is another mechanism to authenticate your domain as a legitimate mail sender and that means lowering your SPAM score in antispam mechanisms. It is done on theRead More…
Centos VLAN trunking
Centos can accept and easily handle VLAN trunks just as same as doing Access mode. Let’s suppose that you have a WAN interface in access mode (so to say, it’s a plainRead More…
Apache – install a complete web server with SSL
This article will describe how to install Apache on Centos 6.5 and set it up for basic web services, insluding php (with apc), perl, cgi and ruby scripting. Let’s install the pacgagesRead More…