# Runbook: mailcow update (mx2)

## Purpose

Update the mailcow stack on mx2 to the latest supported release.

## Scope

- Applicable: [mx2.windy.me](../hosts/mx2.windy.me.md), `/opt/mail`.
- Not applicable: config changes beyond the update, DB migration, secret rotation.

## Ownership

- Owner: personal ops (Windy)
- Last reviewed: 2026-08-17
- Related systems: mx2.windy.me (`/opt/mail`)

## Approval gates

| Action | Risk | Explicit approval |
|---|---|---|
| Run `./update.sh` (recreates containers, brief mail interruption) | Medium | Yes — user confirmation required |

Target: [mx2.windy.me](../hosts/mx2.windy.me.md)  
Path: `/opt/mail`  
**Confirm with the user before running an update.**

## Safety

- Never run the update without explicit user confirmation.
- Never pass secrets into the chat log; do not commit `mailcow.conf`.
- If a step fails, capture `docker compose ps` and logs and stop before further changes.
- If live state conflicts with this runbook's assumptions (e.g. unexpected `mailcow.conf` values), `STOP` and report.

## Before

1. Run [mailcow-health](mailcow-health.md) (Ansible health report). Record baseline.
2. Note config quirks in `mailcow.conf`, especially:
   - `SKIP_CLAMD=y` — after update, `clamd` may still be running until services are recreated per mailcow docs.
   - `SKIP_LETS_ENCRYPT`, ports, hostname — should stay `mx2.windy.me`.
3. Disk/memory: `df -h /` and `free -h` on the host.

## Update

```bash
ssh -t windy@mx2.windy.me 'cd /opt/mail && ./update.sh'
```

- Prefer interactive SSH (`-t`) so prompts work.
- Do not pass secrets into the chat log; do not commit `mailcow.conf`.

If update asks to stop/recreate containers, allow it unless the user said otherwise.

## After

1. Re-run health checks ([mailcow-health](mailcow-health.md)).
2. Confirm UI: `https://mx2.windy.me`
3. Confirm SMTP banner and queue empty.
4. If `SKIP_CLAMD=y` but `cow-clamd-mailcow-1` is still Up and that is unwanted:

   ```bash
   cd ansible
   ansible-playbook playbooks/compose-reconcile.yml --limit mailcow \
     -e '{"service_reconcile_confirm": true, "service_reconcile_targets": ["all"]}'
   ```

   Only after user OK; recreate briefly interrupts mail.

5. Update **Verified** on [hosts/mx2.windy.me.md](../hosts/mx2.windy.me.md) with date and outcome.

## Rollback

Mailcow updates are image/git based; there is no one-click rollback in this runbook. If something fails, capture `docker compose ps` and `docker compose logs --tail=100` for the failing service and stop before further changes.