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Viktor Barzin 137404a6a2 [mailserver] Document Dovecot exporter incompatibility [ci skip] 
## Context

bd code-vnc investigated why `viktorbarzin/dovecot_exporter` only
exposed `dovecot_up{scope="user"} 0`. Root cause: the exporter speaks
the legacy pre-2.3 `old_stats` FIFO wire protocol. docker-mailserver
15.0.0 ships Dovecot 2.3.19, which moved to `service stats` with a
different architecture — `doveadm stats dump` on the old-stats
unix_listener returns "Failed to read VERSION line" and the exporter
loops on "Input does not provide any columns".

Attempted fix: enabled `old_stats` plugin via `mail_plugins` +
declared `service old-stats { unix_listener stats-reader }`. Socket
was created but protocol incompatibility made it useless. Reverted.

## This change

- Reverts the attempted dovecot.cf additions
- Adds a comment in the dovecot.cf heredoc explaining why we
  deliberately do NOT enable old_stats here
- `auth_failure_delay = 5s` (code-9mi) and
  `mail_max_userip_connections = 50` stay — they're unrelated to
  stats

## What is NOT in this change

- A replacement exporter — filed as follow-up bd code-1ik with
  two paths: switch to jtackaberry/dovecot_exporter, or retire the
  exporter+scrape+alert entirely
- The `mailserver-metrics` ClusterIP Service (from code-izl) —
  kept; it will be useful for whichever path code-1ik chooses

## Test Plan

### Automated
```
$ kubectl exec -n mailserver -c docker-mailserver deployment/mailserver -- \
    supervisorctl status dovecot postfix
dovecot RUNNING   pid 1022, uptime 0:00:27
postfix RUNNING   pid 1063, uptime 0:00:26

$ kubectl rollout status deployment/mailserver -n mailserver
deployment "mailserver" successfully rolled out
```

### Manual Verification
Dovecot config returns to baseline + auth_failure_delay. Mail continues
to flow (E2E probe continues to succeed via `email-roundtrip-monitor`).

Closes: code-vnc

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-19 10:55:48 +00:00
..
_template [infra] Establish KYVERNO_LIFECYCLE_V1 drift-suppression convention [ci skip] 2026-04-18 14:15:51 +00:00
actualbudget [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
affine [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
authentik [infra] Adopt Authentik catch-all Proxy Provider + Application into TF (Wave 6a) 2026-04-18 22:48:26 +00:00
beads-server [beads-server] Auto-dispatch agent beads via CronJobs 2026-04-18 22:35:46 +00:00
blog [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
broker-sync broker-sync: chown fidelity_storage_state to broker uid in init container 2026-04-18 23:22:43 +00:00
calico [infra] Partial Calico adoption: namespaces only (Wave 5b) 2026-04-18 22:52:56 +00:00
changedetection [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
city-guesser [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
claude-agent-service [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
claude-memory [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
cloudflared [mailserver] Route DMARC rua/ruf to dmarc@viktorbarzin.me [ci skip] 2026-04-18 23:49:14 +00:00
cnpg [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
coturn [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
crowdsec [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
cyberchef [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
dashy [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
dawarich [dawarich] Re-enable Sidekiq worker with resource limits + probes 2026-04-18 21:13:05 +00:00
dbaas [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
descheduler [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
diun [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
ebook2audiobook [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
ebooks [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
echo [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
excalidraw [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
external-secrets [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
f1-stream [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
foolery [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
forgejo [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
freedify [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
freshrss [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
frigate [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
grampsweb [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
hackmd [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
headscale [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
health [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
hermes-agent [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
homepage [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
immich [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
infra [infra] Migrate Terraform state from local SOPS to PostgreSQL backend 2026-04-16 19:33:12 +00:00
infra-maintenance [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
insta2spotify [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
isponsorblocktv [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
jsoncrack [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
k8s-dashboard [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
k8s-portal [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
kms [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
kured [infra] Adopt kured + sentinel-gate into Terraform (Wave 5a) 2026-04-18 22:33:29 +00:00
kyverno [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
linkwarden [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
local-path [infra] Adopt local-path-provisioner into Terraform (Wave 5c) 2026-04-18 22:39:55 +00:00
mailserver [mailserver] Document Dovecot exporter incompatibility [ci skip] 2026-04-19 10:55:48 +00:00
matrix [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
meshcentral [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
metallb [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
metrics-server [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
monitoring [payslip-ingest] Update extractor agent + dashboard for v2 regex parser 2026-04-19 10:54:33 +00:00
n8n [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
navidrome [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
netbox [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
networking-toolbox [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
nextcloud [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
nfs-csi [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
novelapp [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
ntfy [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
nvidia [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
onlyoffice [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
openclaw [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
osm_routing [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
owntracks [owntracks] Bridge Recorder → Dawarich via Lua hook script 2026-04-18 23:47:22 +00:00
paperless-ngx [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
payslip-ingest [payslip-ingest] Move Payslips datasource 'database' into jsonData 2026-04-18 23:23:07 +00:00
phpipam [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
platform [infra] Add Cloudflare provider to all stack lock files and generated providers 2026-04-16 16:31:36 +00:00
plotting-book [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
poison-fountain [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
priority-pass [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
privatebin [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
proxmox-csi [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
pvc-autoresizer [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
rbac [infra] Migrate Terraform state from local SOPS to PostgreSQL backend 2026-04-16 19:33:12 +00:00
real-estate-crawler [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
redis [redis] Bump master/replica memory 64Mi→256Mi (OOMKilled on PSYNC) 2026-04-19 10:40:51 +00:00
reloader [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
resume [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
reverse-proxy [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
rybbit [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
sealed-secrets [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
send [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
servarr [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
shadowsocks [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
speedtest [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
status-page [infra] Establish KYVERNO_LIFECYCLE_V1 drift-suppression convention [ci skip] 2026-04-18 14:15:51 +00:00
stirling-pdf [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
tandoor [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
technitium [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
terminal [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
tor-proxy [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
trading-bot [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
traefik [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
travel_blog [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
tuya-bridge [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
uptime-kuma [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
url [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
vault [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
vaultwarden [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
vpa [infra] Migrate Terraform state from local SOPS to PostgreSQL backend 2026-04-16 19:33:12 +00:00
wealthfolio wealthfolio: add nightly backup sidecar — SQLite → NFS 2026-04-18 22:25:19 +00:00
webhook_handler [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
whisper [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
wireguard [infra] Suppress Goldilocks vpa-update-mode label drift on all namespaces [ci skip] 2026-04-18 21:15:27 +00:00
woodpecker [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
xray [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00
ytdlp [infra] Sweep dns_config ignore_changes across all pod-owning resources [ci skip] 2026-04-18 21:19:48 +00:00