Cloudflare, Inc. is an American web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services. Cloudflare’s services sit between a website’s visitor and the Cloudflare user’s hosting provider, acting as a reverse proxy for websites.
You may encounter this error, ‘550: relay not permitted,’ if your remote email server is misconfigured on your web/email hosting service. You may also encounter this issue when you misconfigured your Cloudflare account’s DNS settings.
The main symptom is that you cannot receive emails using your email ID.
Cloudflare is a good web service that provides CDN, Caching, HTML – JavaScript – CSS Minifying and security from DDOS attacks free of cost.
However, you must add your domain to Cloudflare to use this service.
Interaction is simple. At the top of your dashboard’s navigation bar, there is a prominent button called ‘Add Site’. Clicking it transfers you to the next page, where you can copy-paste your website’s URL.
If you are getting an error like ‘Invalid Domain’ while adding your website to Cloudflare, use this trick to bypass this error.
If you are copy-pasting the URL with the http suffix, then you will get an error:
// You will get error
http://yourdomain.com
Then you have to enter your domain without http or www, and It should look like this:
// Success
yourdomain.com
The ‘Invalid Domain’ error should be resolved by now.
Prerequisite: Please ensure you have an active CloudFlare account and have added your WordPress Website to CloudFlare. Also, make sure you are using CloudFlare nameservers for your domain.
Step 01: Sign in to your CloudFlare account
Step 02: Make sure a flexible SSL certificate is enabled under the “Crypto” tab for your selected website
Step 03: While signing in to your CloudFlare account, go to > My Profile, Scroll down to API Keys, locate the Global API Key, and copy the key for further use inside your website.
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