https://mailcow.email/The mailserver suite with the 'moo' – 🐮 + 🐋 = 💕 | Official Blog PageHugo 0.147.3 & FixIt v0.3.21-a85a6655enWed, 21 Oct 2026 19:49:05 +0200https://mailcow.email/posts/2026/release-2026-10/Wed, 21 Oct 2026 19:30:00 +0200https://mailcow.email/posts/2026/release-2026-10/Updates<h2 class="heading-element" id="2026-10-release-21st-october-2026"><span>2026-10 (Release: 21st October 2026)</span> <a href="#2026-10-release-21st-october-2026" class="heading-mark"> <svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg> </a> </h2><p><strong>Moohoo everyone!</strong></p>https://mailcow.email/posts/2026/release-2026-09/Tue, 06 Oct 2026 12:45:00 +0200https://mailcow.email/posts/2026/release-2026-09/Updates<h2 class="heading-element" id="2026-09a-release-6th-october-2026"><span>2026-09a (Release: 6th October 2026)</span> <a href="#2026-09a-release-6th-october-2026" class="heading-mark"> <svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg> </a> </h2><p>This revision update bumps <strong>Rspamd to 4.2.1</strong>, addressing multiple issues in Rspamd. It also fixes several issues with the <strong>domain wide footer</strong>: attachments could get lost in certain mails, and links and images in 7bit mails as well as attachments sent from SOGo could get corrupted. On top of that, <strong>postfix-tlspol</strong> is bumped to <strong>1.14.0</strong>.</p>https://mailcow.email/posts/2026/release-2026-07/Tue, 18 Aug 2026 09:00:00 +0200https://mailcow.email/posts/2026/release-2026-07/Updates<h2 class="heading-element" id="2026-07b-release-18th-august-2026"><span>2026-07b (Release: 18th August 2026)</span> <a href="#2026-07b-release-18th-august-2026" class="heading-mark"> <svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg> </a> </h2><p>This revision update bumps <strong>Redis to 7.4.10</strong>, <strong>SOGo to 5.12.10</strong> and <strong>ClamAV to 1.4.6</strong>, addressing multiple security issues in these components. It also ships some <strong>minor hardening across the web UI and Nginx</strong> as well as a few smaller fixes.</p>https://mailcow.email/posts/2026/release-2026-05/Tue, 12 May 2026 08:00:00 +0200https://mailcow.email/posts/2026/release-2026-05/Updates<h2 class="heading-element" id="2026-05c-release-26th-may-2026"><span>2026-05c (Release: 26th May 2026)</span> <a href="#2026-05c-release-26th-may-2026" class="heading-mark"> <svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg> </a> </h2><p>This update fixes <strong>CVE-2026-33278</strong> in unbound and bumps <strong>Nginx to version 1.30.2</strong>.</p>https://mailcow.email/posts/2026/derlinkman-leave/Fri, 24 Apr 2026 08:00:00 +0200https://mailcow.email/posts/2026/derlinkman-leave/News<p><strong>Moohoo everyone.</strong></p> <p>Today I want to officially announce <u>my</u> departure from The Infrastructure Company GmbH and thus from the mailcow team as well. Effective May 1st, 2026, I will no longer be part of the team.</p> <p>The past years have been a formative time for me both professionally and personally. Together with the community, contributors, and users, we were able to continuously develop and stabilize mailcow into the solution it is today. The countless deployments, discussions, issues, pull requests, and critical feedback have made the project even stronger.</p>