Tutorials

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

How to install Netdata for real-time monitoring

Netdata shows you hundreds of real-time metrics, with beautiful graphs, in just a few minutes.

Rspamd is a modern, fast spam filter. Here is how to use it to keep your inbox clean.

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

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

If your emails are rejected, your IP might be on a blocklist. Here is how to check and what to do.

Read your email from the browser with Roundcube, a clean webmail interface for your mail server.

Build a mail server by hand with Postfix (sending) and Dovecot (receiving), for full control.

Find your public IP address in a second and your local IP from Settings, Command Prompt or PowerShell, on Windows 10 and 11.

Find your public and local IP address on Linux: ip addr, hostname -I, GNOME Settings and the right way on a headless server.

Find your Mac's public IP address in a second and the local IP from System Settings or the Terminal, on any macOS.

The pros, cons and what you need to know before hosting email on your own server.

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