Mail Server

Mail server setup and related email components.

Rspamd mail filtering and DKIM signing illustration

Jul 28, 2026 • 8 min read • series

Install and Integrate Rspamd on Ubuntu 26.04

Install Rspamd on Ubuntu 26.04, connect it to Postfix as a milter, configure Redis, and publish DKIM and DMARC records for your mail domain.

PostfixAdmin dashboard illustration with mailboxes and aliases

Jul 27, 2026 • 9 min read • series

Set up PostfixAdmin on Ubuntu 26.04

Set up PostfixAdmin on Ubuntu 26.04 with Nginx, PHP, MySQL, DNS records, and a Let's Encrypt certificate for a virtual mail server.

Email envelope passing SPF, DKIM, and DMARC authentication checks

Jul 17, 2026 • 8 min read

Email Authentication Explained: SPF, DKIM, and DMARC

SPF, DKIM, and DMARC help prevent domain spoofing. See how each check works, what DMARC alignment requires, and how to verify the DNS records with dig.

May 8, 2026 • 6 min read • series

Install and Configure Roundcube Webmail on Ubuntu 26.04

Install Roundcube Webmail on Ubuntu 26.04 with PHP-FPM, MySQL, Nginx, IMAP, SMTP submission, and server-side Sieve filters.

May 8, 2026 • 10 min read • series

Install and Configure Postfix and Dovecot on Ubuntu 26.04

Postfix is an open-source mail transfer agent (MTA), a service used to send and receive emails. Dovecot is an IMAP/POP3 server and in our setup it will also handle local delivery and user authentication.

Postfix and Dovecot mail flow illustration