Domains and DNS
DKIM Records Explained
What is DKIM? DomainKeys Identified Mail (DKIM) is an authentication standard used to prevent email spoofing. DKIM attempts to prevent the spoofing of a domain that’s…
1 April 2022 2 min read
Blog
News, guides and platform updates from the AOIT Cloud Hosting team.
Filters 1
Tag
VPS Security guide linux ubuntu user management AlmaLinux freebsd sudo DNS Linux distributions fedora coreos ubuntu server Linux basics RHEL package management OpenBSD debian server administration Domains Email SPF security updates Rocky Linux vps basics Oracle Linux Fedora DKIM VzLinux systemd patching patch management CentOS alternatives VPS setup automatic updates Linux security containers firewall ignition apt unix server setup Ksplice butane operating systems hosting basics adduser dnf uptime troubleshooting Windows Server 2019 quadlet freebsd-update ports server resources SSH EOL pf Windows Server 2022 Virtuozzo jails caching CLI pfctl SSL zincati cron virtualisation web performance coreos rpm open-source lts syspatch linux users bastille cdn immutable linux firewalld phpList ufw maintenance windows base system zfs content delivery network firewall-cmd centos rpm-ostree release management storage ddos protection Active Directory UEK systemctl centos 7 immutable infrastructure filesystems Domain Controller journalctl update choosing a distro Windows Server 2012 kernel patching provisioning comparison shared hosting OpenSSH Windows Server 2012 R2 ssh keys Linux administration DMARC snap sysadmin VPS hosting SELinux system upgrade doas Windows Server 2016 VPS security podman wheel group unattended-upgrades pkg dedicated servers server maintenance pkg_add
Category
Order
Domains and DNS
How to Use DKIM to Prevent Domain Spoofing
What is DKIM? DKIM (DomainKeys Identified Mail) is a cryptographic technology that senders can use to sign their messages with. DKIM allows the receiver…
1 May 2022 3 min read
Domains and DNS
SPF Records Explained
What is SPF? Sender Policy Framework (SPF) allows domain owners to specify legitimate email origins in an attempt to combat spam and phishing emails.…
1 June 2022 3 min read
Domains and DNS
What is DMARC? Understanding DMARC Records
Domain-based Message Authentication, Reporting & Conformance, or DMARC for shorts, is a protocol that uses SPF (Sender Policy Framework) and DKIM (DomainKey Identified Mail)…
1 November 2022 3 min read
CentOS 7
How to Update CentOS 7
CentOS 7 is one of the most popular Linux distribution used in a large amount of web servers around the world. It is critical…
1 February 2023 2 min read
Domains and DNS
What are DNS Records?
DNS (Domain Name System) records are the entries in a DNS database that map domain names to IP addresses and other information about a…
1 March 2023 4 min read
Guides and How Tos
How to Remove phpList Branding
If you’ve just installed or are looking to use phpList in production then you will probably want to remove or replace the “Powered by”…
15 October 2023 2 min read
Domains and DNS
Understanding SSL Certificates
SSL certificates play an important role in securing the internet. They protect sensitive information, build user trust, and even contribute positively towards your website’s…
23 October 2023 4 min read
Guides and How Tos
How to Rename a Domain Controller using netdom
Preparation Renaming your DC using netdom Step 1: Open Command Prompt Open command prompt as a domain administrator by pressing Windows Key Step 2:…
30 October 2023 3 min read
Guides and How Tos
How to Create a New Sudo User in Ubuntu
Adding a new user in Ubuntu 22 is very easy a should take around 1 to 2 minutes. User accounts can only be create…
6 November 2023 2 min read
Information
SSH Keys: Choosing RSA or Ed25519
SSH, or Secure Shell keys have a critical role in modern authentication and encryption when establishing secure connections. By utilising advanced mathematical functions SSH…
13 November 2023 4 min read
Domains and DNS
What is DNS and How Does it Work?
What is a DNS? A domain name system (DNS) is a naming database. In this database, internet domain names are identified and translated into…
20 November 2023 11 min read
Information
Enforced Two-Factor Authentication (2FA)
Starting Monday, November 18th 2024, 2FA will be mandatory for accessing your account. This is necessary because our dashboard allows Single Sign-On (SSO) to…
18 September 2024 2 min read
AlmaLinux
Managing Packages with dnf: A Practical Guide for RHEL-Family Linux
Learn the dnf commands you'll actually use on a RHEL-family VPS - installing, removing, updating, searching, undoing mistakes, and automating security updates.
1 October 2024 6 min read
AlmaLinux
firewalld Basics on RHEL-Family Linux
A practical introduction to firewalld - zones, services, and ports - with the firewall-cmd commands you need to open ports safely on a new…
4 October 2024 5 min read