DNS

Preventing email spoofing is important to all domain owners, even if you are not using your domain for email services as it affects the reputation of your domain. In this post I will talk about how to prevent email spoofing with SPF, DKIM and DMARC. Sender Policy Framework (SPF) SPF allows the receiver to check that an email claiming to come from a specific domain comes from an IP address authorized by that domain’s administrators....

In this tutorial we will get a wildcard certificate from letsencrypt using the cloudflare dns plugin. For the purpose of this tutorial we will be using example.com as the domain. Install Cloudflare DNS Plugin This tutorial assumes you have already installed certbot. If you have not, you can follow the instructions from certbot-eff. sudo apt update sudo apt install python3-certbot-dns-cloudflare -y API Credentials mkdir -p /root/secrets/certbot Retrieve your api key from cloudflare....