--- name: 🐞 Bug Report about: Report a reproducible bug for mailcow. (NOT to be used for support questions.) labels: bug, Needs triage --- **Prior to placing the issue, please check following:** *(fill out each checkbox with an `X` once done)* - [ ] I understand that not following or deleting the below instructions will result in immediate closure and/or deletion of my issue. - [ ] I have understood that this bug report is dedicated for bugs, and not for support-related inquiries. - [ ] I have understood that answers are voluntary and community-driven, and not commercial support. - [ ] I have verified that my issue has not been already answered in the past. I also checked previous [issues](https://github.com/mailcow/mailcow-dockerized/issues). ## Summary ## Logs ## Reproduction ## System information | Question | Answer | | --- | --- | | My operating system | I_DO_REPLY_HERE | | Is Apparmor, SELinux or similar active? | I_DO_REPLY_HERE | | Virtualization technlogy (KVM, VMware, Xen, etc - **LXC and OpenVZ are not supported** | I_DO_REPLY_HERE | | Server/VM specifications (Memory, CPU Cores) | I_DO_REPLY_HERE | | Docker Version (`docker version`) | I_DO_REPLY_HERE | | Docker-Compose Version (`docker-compose version`) | I_DO_REPLY_HERE | | Reverse proxy (custom solution) | I_DO_REPLY_HERE | - Output of `git diff origin/master`, any other changes to the code? If so, **please post them**. - All third-party firewalls and custom iptables rules are unsupported. *Please check the Docker docs about how to use Docker with your own ruleset*. Nevertheless, iptabels output can help us to help you: `iptables -L -vn`, `ip6tables -L -vn`, `iptables -L -vn -t nat` and `ip6tables -L -vn -t nat`. - DNS problems? Please run `docker exec -it $(docker ps -qf name=acme-mailcow) dig +short stackoverflow.com @172.22.1.254` (set the IP accordingly, if you changed the internal mailcow network) and post the output.