The mailserver suite with the 'moo' โ€“ ๐Ÿฎ + ๐Ÿ‹ = ๐Ÿ’•

News and Infos

๐Ÿฎ๐Ÿ„ Moovember 2023 Update | Quarantine Hotfix (Security), Rspamd 3.7.4, Synchronization Jobs, and Domain Wide Footer Fixes

Moo hoo everyone!

The holiday season is slowly approaching, and here we are with another update at our doorstep.

First things first: It’s advisable to update (especially if using Quarantine) due to a critical security patch. A specific CVE number will follow soon.

๐ŸŽƒ๐Ÿ„ Mooctober 2023 Update | Domainwide Footer, cURL Fixes and more - Revision A

2023-10a (Released 12th October 2023)


  • We’ve fixed the wrongly used clamav tag inside the docker-compose.yml. Now you are really using ClamAV 1.0.3 LTS!
  • We’ve removed the restart action from the depends_on section (tied to the unbound healthcheck logic) from the docker-compose.yml. Older Versions of Docker Compose v2 would not be able to start the stack with those settings set. (Please keep your systems up to date!!!!)

2023-10 (Released 12th October 2023)

MooBoo hoo everyone!

It’s spooky season again and we hope you’re all ready to celebrate the Halloween season this year.

However mailcow is also delivering you with some treats (tricks “sold” seperately and not included in this update) regarding the stack.

This time it’s quite huge!

๐Ÿ”ฅ๐Ÿ„ Hotfix Update September 2023 (SOGo 5.9.0)

2023-09 Moohoo everyone! We are back with a tiny mailcow update that solves the problems with macOS 14 (Sonoma) and SOGo. That’s all there is this month. More content will come in early October with update 2023-10. Changelog [SOGo] Update to 5.9.0 The full changelog, including the individual commits, is available on GitHub at any time for those interested: As always, a huge thank you to our great mailcow community for your continued support and valuable feedback.

๐Ÿ”’๐Ÿ”‘ External Identity Providers for User authentication

Moohoo - Good News, everyone! With the Nightly Branch, it is now possible to use an external Identity Provider as an additional authentication source. mailcow utilizes the OIDC (OpenID Connect) protocol to authenticate only mailbox users. To enable this, we have made some changes to the way authentication works. Let’s talk about what has changed, what we had in mind, and what we plan to add in the future. Of course, we will also show you how to use the new feature.

๐ŸŒป ๐Ÿ„ Moogust Update 2023 - Spamhaus DQS Hotfixes

2023-08 (Release 3rd August 2023) Moohoo everyone! I hope you are not tired yet of performing updates. The 2023-08 Release is here, and it contains some hotfixes for the new Spamhaus DQS feature. If you are not using Spamhaus DQS and haven’t experienced any issues with the 2023-07 update, you don’t have to install this update. As this release only contains hotfixes, there is not much to say about it, except for one thing.

๐Ÿ’ ๐Ÿ„ Mooly Update 2023 (a) - Manageable CORS Settings and UI Improvements

2023-07a (Release 31th July 2023) There are some fixes for the 2023-07 update. Most of the fixes are related to the latest changes regarding the DNS blocklists of the postscreen in Postfix: Changelog isn’t appended to and therefore ineffectiveโ€ฆ Fix Reponse Code for ASN Checks [Postfix] Reimplemented option for custom dnsbls [Postfix] Added for customizations [Postfix] update postscreen_access.cidr Update SOGo to 5.8.4 Fix spamhaus query domains (.net only) As always, the full changelog with the individual commits is available on GitHub: https://github.

๐Ÿค”๐Ÿฎ What's up? - ARM64 Integration

Moohoo everyone! It has been more than a month since you heard from us and today we have a shadowdrop as an update. Since we have a few things to discuss and want to communicate directly in the future, we came up with a section called What’s up?. Today we start with the first topic, namely ARM64: Originally we announced to have mailcow ARM64 ready by June 2023. Obviously that didn’t work out so well.