Question

"Invalid Host header" Error

  1. I have deployed my server on ubunto-20x, tested it with IP address and was working fine.

  2. Then i added the domain name (from namecheap), added ns1, ns2, ns3.digitalocean.com to namecheap NameSpaces, and setup-ed the @ and www referring to the droplet in my domain

  3. setup-ed ufw to allow only http and https access

  4. Then setup-ed SSL certificate using Let’s Encrypt and Certbot.

Now i am getting “Invalid Host header” on result when i use https://www.mydomain.co, Although it is working when i use https://xxx.xxx.x.x (my droplet IP)

what could be wrong ?

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Hi there @ahmedmohsenafifi,

This could be due to a host check on your application level. What is the framework that you are using?

You might have to add your new domain name to the allowed hosts or disable the host check from your application, but this would depend on the framework.

Regards, Bobby