https://www.pistack.xyz/tags/dkim/ Recent content in Dkim on Pi Stack Hugo en-us Fri, 08 May 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-05-18-opendkim-vs-rspamd-vs-opendmarc-email-authentication-guide/ Fri, 08 May 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-05-18-opendkim-vs-rspamd-vs-opendmarc-email-authentication-guide/ <p>Email authentication is no longer optional — major providers like Gmail, Yahoo, and Outlook now <strong>require</strong> SPF, DKIM, and DMARC for bulk senders. Without proper email authentication, your self-hosted mail server&rsquo;s messages will land in spam folders or be rejected entirely. This guide compares three leading open-source tools for implementing email authentication: <strong>OpenDKIM</strong>, <strong>Rspamd</strong>, and <strong>OpenDMARC</strong>.</p>