chore(email): decommission SMTP2GO references — local MTA only

SMTP2GO is no longer used: Listmonk relays through the local Postfix MTA
(172.18.0.1:25 from the Docker network), which DKIM-signs and delivers
direct-to-recipient-MX; transactional mail goes through Carbonio. Verified
zero smtp2go in any live container env + postfix has no external relayhost.

Removed the stale references so a rebuild/new dev can't re-introduce it:
- api/src/config.ts: SMTP_HOST default mail.smtp2go.com -> co.carrierone.com
- scripts/workers/crypto_payment_worker.py: same default fix
- infra/ansible all.yml: listmonk_smtp_* now 172.18.0.1:25, no auth (+comment)
- app.env.j2 / email.ts / crm.md / go-live-todo.md / architecture.svg: docs

api/src/config.ts

@@ -99,7 +99,7 @@ function loadConfig(): Config {
       webhookSecret: optional("STRIPE_WEBHOOK_SECRET", ""),
     },
     smtp: {
-      host: optional("SMTP_HOST", "mail.smtp2go.com"),
+      host: optional("SMTP_HOST", "co.carrierone.com"),
       port: parseInt(optional("SMTP_PORT", "587"), 10),
       user: optional("SMTP_USER", ""),
       pass: optional("SMTP_PASS", ""),

api/src/email.ts

@@ -6,7 +6,7 @@
  *   - Portal access link emails (JWT-signed links)
  *
  * All transactional emails go through Carbonio: co.carrierone.com:587
- * (SMTP2GO is used only by Listmonk for mass-mail campaigns.)
+ * (Listmonk mass-mail relays through the local Postfix MTA, not this path.)
  * Env vars: SMTP_HOST, SMTP_PORT, SMTP_USER, SMTP_PASS, SMTP_FROM
  */
 

docs/architecture.svg

@@ -165,7 +165,7 @@
   <rect x="487" y="524" width="72" height="18" rx="3" fill="#fed7aa" stroke="#f97316"/>
   <text x="523" y="537" text-anchor="middle" font-size="8" fill="#9a3412">Anytime MB</text>
   <rect x="564" y="524" width="72" height="18" rx="3" fill="#e0f2fe" stroke="#7dd3fc"/>
-  <text x="600" y="537" text-anchor="middle" font-size="8" fill="#0c4a6e">SMTP2GO</text>
+  <text x="600" y="537" text-anchor="middle" font-size="8" fill="#0c4a6e">Local MTA</text>
   <rect x="641" y="524" width="72" height="18" rx="3" fill="#f1f5f9" stroke="#cbd5e1"/>
   <text x="677" y="537" text-anchor="middle" font-size="8" fill="#475569">TronGrid</text>
 

docs/crm.md

@@ -270,7 +270,7 @@ store customer orders or tickets — ERPNext is the CRM source of truth.
 3. Listmonk tracks email opens/clicks and manages subscriber lists
 4. Bounce processing via POP3 from Carbonio (`co.carrierone.com`)
 
-**Mass email:** SMTP2GO is used for Listmonk campaign sends (not Carbonio — Carbonio is for transactional email only).
+**Mass email:** Listmonk campaign sends relay through the local Postfix MTA (172.18.0.1:25 from the Docker network), which DKIM-signs and delivers direct-to-recipient-MX. Carbonio (co.carrierone.com) is for transactional email only. (SMTP2GO was decommissioned — no external relay is used.)
 
 **Campaigns:**
 

docs/go-live-todo.md

@@ -140,7 +140,7 @@
 ## PRIORITY 7 — Listmonk (Email Marketing) ~~COMPLETE~~
 
 - [x] Deploy Listmonk at lists.performancewest.net (Docker, PostgreSQL-backed)
-- [x] Configure SMTP2GO outbound email (separate from Carbonio transactional SMTP)
+- [x] Configure Listmonk mass-mail via the local Postfix MTA (SMTP2GO decommissioned; separate from Carbonio transactional SMTP)
 - [x] Import 10,191 FCC RMD contacts into Listmonk (3 subscriber lists)
 - [x] Configure bounce processing via POP3 from Carbonio (bounces@performancewest.net)
 - [x] Create 22 scheduled campaigns across 4 lists

infra/ansible/inventory/group_vars/all.yml

@@ -80,13 +80,17 @@ smtp_pass: "{{ vault_smtp_pass }}"
 smtp_from: "Performance West <noreply@performancewest.net>"
 smtp_admin_email: ops@performancewest.net
 
-# ── Listmonk (mass-mail via SMTP2GO) ─────────────────────────────────────────
+# ── Listmonk (mass-mail via the LOCAL MTA) ───────────────────────────────────
-# Listmonk SMTP is configured via its web admin UI, not env vars.
+# Listmonk SMTP is configured via its web admin UI, not env vars. Listmonk relays
-# These vars are kept here for documentation and manual reference.
+# through the host Postfix (172.18.0.1:25 from inside the Docker network), which
-listmonk_smtp_host: mail.smtp2go.com
+# DKIM-signs and delivers direct-to-recipient-MX. We no longer use any external
-listmonk_smtp_port: 587
+# relay (SMTP2GO was decommissioned). These vars are kept here for documentation
-listmonk_smtp_user: "{{ vault_listmonk_smtp_user | default(smtp_user) }}"
+# and manual reference.
-listmonk_smtp_pass: "{{ vault_listmonk_smtp_pass }}"
+listmonk_smtp_host: 172.18.0.1
+listmonk_smtp_port: 25
+# The local Postfix relay requires no auth (auth_protocol: none, tls_type: none).
+listmonk_smtp_user: ""
+listmonk_smtp_pass: ""
 listmonk_admin_user: "{{ vault_listmonk_admin_user }}"
 listmonk_admin_password: "{{ vault_listmonk_admin_password }}"
 

infra/ansible/roles/app/templates/app.env.j2

@@ -54,7 +54,7 @@ WORKER_URL=http://workers:8090
 
 # ── Transactional email — Carbonio (co.carrierone.com) ───────────────────────
 # All transactional mail: order confirmations, worker notifications, ERPNext alerts.
-# Listmonk mass-mail uses SMTP2GO — configured separately in the Listmonk admin UI.
+# Listmonk mass-mail relays through the local Postfix MTA — configured separately in the Listmonk admin UI.
 SMTP_HOST={{ smtp_host }}
 SMTP_PORT={{ smtp_port }}
 SMTP_USER={{ smtp_user }}

scripts/workers/crypto_payment_worker.py

@@ -809,7 +809,7 @@ automate this process.
             import smtplib
             from email.mime.text import MIMEText
 
-            smtp_host = os.environ.get("SMTP_HOST", "mail.smtp2go.com")
+            smtp_host = os.environ.get("SMTP_HOST", "co.carrierone.com")
             smtp_port = int(os.environ.get("SMTP_PORT", "587"))
             smtp_user = os.environ.get("SMTP_USER", "")
             smtp_pass = os.environ.get("SMTP_PASS", "")