It is worrisome when you receive a notification from the firewall regarding a suspicious process, especially for those processes that you do not readily recognize. That is why KnownHost has compiled a list of some common alerts that are mostly false positives and provided the instructions for stopping the notifications. This list is specific to […]
How DNS Works Anyone that has ever configured their own custom/vanity nameservers will know that the nameservers must be set at both the server and at the registrar. Very few people really understand why. Understanding why means that you need to first understand a bit about how DNS works. To revisit the process of configuring your own […]
An SOA Record is short for Start of Authority. What does that mean? The SOA Record specifies authoritative information about a DNS zone, including the primary name server, the email of the domain administrator, the domain serial number, and several timers relating to refreshing the zone. Here’s an SOA Record example: The example shows a dig result […]
If your server has fallen victim to IP blacklisting, you’ll certainly want to know how to request your blacklisting be removed. This article will cover blacklist removal and provide links to specific RBL de-listings. Checking Blacklists First thing to do is check and see if you are actually listed on any blacklists. There are many […]
Simple Mail Transfer Protocol i.e., SMTP is used for sending and receiving emails. Whenever an email is rejected by the third party server or by the parent email server, then SMTP produces a specific Error/Response, which can be used to troubleshoot/identify the cause of email delivery failure. We gathered most of the SMTP errors/responses users […]
SPF, DKIM, and DMARC records are intended to fight SPAM and email spoofing. These mechanisms don’t analyse content of the message in search of malicious code, spam-like content, or content that would be used in a phishing attempt. Other dedicated tools should be used to detect viruses & malicious scripts or to flag messages as spam-like or scam-like based on […]
This section of the guide will help detail and explain the methods for how to set up proper mail server configuration. Configuring your mail server is an involved process, however, KnownHost is here to help. cPanel makes it easy to create email accounts for your domain, but it is your responsibility to ensure that they […]
Memcached Memcached is a memory object caching system for speeding up dynamic web applications… It’s open source and has been designed to work with a large number of open connections. Database calls, API calls, or page rendering are a few examples of the arbitrary data results that are stored in memory to alleviate database load. One can […]
25+ Reasons We Love Cloudflare Cloudflare can be an indispensable asset for your site and here are 25 awesome features that are enabled by default under their free plan: Brotli Standard level of Automatic Static Content Caching with instant cache purge Always Online (keeps the static portion of your site online when origin server is […]
cPanel deprecated Ruby on Rails in cPanel & WHM version 66 since it is not supported on CentOS 7 servers. Rails is a Ruby application, and they support Ruby applications via cPanel’s Application Manager interface (Home » Software » Application Manager), so this can technically be done. However, I cannot promise that it will run seamlessly forever […]