73 lines
2.9 KiB
YAML
73 lines
2.9 KiB
YAML
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---
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# Fetch DKIM public keys from the running mailserver and publish them to DNS.
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#
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# Safe to re-run — only generates keys for domains that don't have one yet.
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# Run after the first mail deployment:
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# ansible-playbook playbooks/dkim_sync.yml
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#
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# What it does:
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# 1. Generates DKIM keys for any domain missing one (skips existing keys)
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# 2. Discovers each domain's key file at runtime via find — the algorithm prefix
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# (rsa-2048-..., ed25519-...) may vary across docker-mailserver versions,
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# but the *<domain>.public.dns.txt suffix is stable
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# 3. Writes $LINDERHOF_DIR/group_vars/all/dkim.yml (plain file — DKIM keys are public)
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# 4. Runs dns.yml to create/update mail._domainkey TXT records for all domains
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- name: Fetch DKIM keys from mailserver
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hosts: all
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gather_facts: false
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tasks:
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- name: Check for existing DKIM key files
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# /srv/mail/config is the host-side mount of /tmp/docker-mailserver in the container
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command: find /srv/mail/config/rspamd/dkim -name "*{{ item }}.public.dns.txt" -type f
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loop: "{{ mail_domains }}"
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register: dkim_existing
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changed_when: false
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failed_when: false
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- name: Generate DKIM keys for domains without existing keys
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command: docker exec mailserver setup config dkim
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when: dkim_existing.results | selectattr('stdout', 'equalto', '') | list | length > 0
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changed_when: true
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- name: Find DKIM DNS TXT key file for each domain
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command: find /srv/mail/config/rspamd/dkim -name "*{{ item }}.public.dns.txt" -type f
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loop: "{{ mail_domains }}"
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register: dkim_file_paths
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changed_when: false
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- name: Read DKIM public key for each domain
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slurp:
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src: "{{ item.stdout | trim }}"
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loop: "{{ dkim_file_paths.results }}"
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loop_control:
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label: "{{ item.item }}"
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register: dkim_keys_raw
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- name: Build dkim_keys dict
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set_fact:
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dkim_keys_collected: >-
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{{ dkim_keys_collected | default({}) | combine({item.item.item: item.content | b64decode | trim}) }}
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loop: "{{ dkim_keys_raw.results }}"
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loop_control:
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label: "{{ item.item.item }}"
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- name: Write dkim.yml to stack config directory
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delegate_to: localhost
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become: false
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# Written to a separate dkim.yml rather than config.yml so this playbook can safely
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# overwrite it without touching the hand-edited config. Ansible loads all files under
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# group_vars/all/ automatically, so dkim_keys is available to all roles either way.
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copy:
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content: |
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---
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# DKIM public keys — written automatically by dkim_sync.yml, do not edit manually
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dkim_keys:
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{% for domain_name, key in dkim_keys_collected.items() %}
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{{ domain_name }}: "{{ key }}"
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{% endfor %}
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dest: "{{ lookup('env', 'ANSIBLE_INVENTORY') | dirname }}/group_vars/all/dkim.yml"
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- import_playbook: dns.yml
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