What is a Blacklist?
Depending on the source, the amount of daily spam emails being sent is anywhere between 80 and 95% of all emails sent on the internet that day. With such large numbers, most experts agree that manually sorting through your inbox to get rid of spam has become highly inefficient these days. As such, public blacklists of mail servers and IP addresses have been created to prevent repeat offenders from relaying spam.
A blacklist is a list of blocked domains, email addresses or IP addresses. When a website gets on one of these lists, users can no longer access the site...
Microsoft Windows Server 2008 and 2008 R2 were both great technological breakthroughs in the hosting fields, introducing new features which are essential for any modern system, such as a shift from 32-bit to 64-bit computing, advanced analytics and budding server virtualization technologies. Unfortunately, all good things must come to an end, including Microsoft’s support for these industry-forming server operating systems. As many know, misfortune never comes alone, so along with their Windows Server 2008 versions, Microsoft is also discontinuing support for SQL Server 2008 and 2008...
One of the most important changes to be made in the CentOS is changing iptables to firewalld. If you want to revert this switch and go back to using iptables, it is possible however, you must originally configure the firewall. Follow the steps outlined below to change firewalld to iptables.
Use the following code to install iptables:
yum install –y iptables-services
Then mask firewalld service:
systemctl mask firewalld
Now, we should enable the iptables service:
systemctl enable iptables systemctl enable ip6tables
Next, enter the iptables directory and set all the rules that you...
