🌻 🐄 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.
If you don’t want to use Postscreen DNSBL at all, you can delete and leave the content of the file data/conf/postfix/dns_blocklists.cf empty.
To undo any changes to this file, simply delete the file and restart Postfix.


  • Fix main.cf merging order
  • [Postfix] rework dns_blocklists.cf generation
  • Add postscreen_dnsbl_reply_map to avoid disclosure of DQS key

The full changelog with the individual commits is available on GitHub: https://github.com/mailcow/mailcow-dockerized/releases/tag/2023-08

As always, a big thank you to our amazing mailcow community for your continuous support and valuable feedback.

Stay healthy and happy mailing!

Your mailcow Team