Tutorials

Step-by-step guides for your cloud servers: installs, configuration and best practices.

How to test email deliverability (avoid the spam folder)

Check whether your emails reach the inbox and what spam score they have, with free tools.

Catch any address on your domain and forward messages to another mailbox.

IPv6 is the future of internet addresses. Here is how to enable and check it on your server.

A CDN delivers content close to visitors, faster. Here is how it works and when it is worth it.

Set up SPF, DKIM and DMARC so your emails reach the inbox, not spam.

Pick a single version of your domain, with or without www, and redirect the other for SEO and consistency.

Link your servers through an encrypted WireGuard tunnel, so they communicate securely without exposing services to the internet.

Use subdomains like app.example.com or blog.example.com for separate services, on the same server or others.

Reverse DNS links an IP back to a name and is essential for email delivery. Here is how it works.

Cloudflare offers fast DNS, global cache and basic protection for free. Here is how to connect it to your server.

After you change a DNS record, it takes time to update everywhere. Here is why, and how to check the status.

A, AAAA, CNAME, MX, TXT, NS: what each DNS record means and when to use it.