diff --git a/RELEASE_NOTES_v2.2.42.md b/RELEASE_NOTES_v2.2.42.md
new file mode 100644
index 0000000..6e3f1c8
--- /dev/null
+++ b/RELEASE_NOTES_v2.2.42.md
@@ -0,0 +1,18 @@
+# Release Notes v2.2.42
+
+Dato: 3. marts 2026
+
+## Fix: Yealink webhook compatibility + deploy robusthed
+- Tilføjet `GET` support på Mission Control telefoni-webhooks, så Yealink callback-URLs ikke returnerer `405 Method Not Allowed`.
+- Webhook-endpoints understøtter nu query-parametre for `call_id`, `caller_number`, `queue_name` og valgfri `timestamp`.
+- `updateto.sh` er hærdet med tydelig fail-fast ved portkonflikter og mislykket container-opstart, så scriptet ikke melder succes ved delvis fejl.
+
+## Ændrede filer
+- `app/dashboard/backend/mission_router.py`
+- `updateto.sh`
+- `VERSION`
+
+## Påvirkede endpoints
+- `/api/v1/mission/webhook/telefoni/ringing` (`POST` + `GET`)
+- `/api/v1/mission/webhook/telefoni/answered` (`POST` + `GET`)
+- `/api/v1/mission/webhook/telefoni/hangup` (`POST` + `GET`)
diff --git a/VERSION b/VERSION
index 4a8398d..4543a20 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.2.41
+2.2.42
diff --git a/app/dashboard/backend/mission_router.py b/app/dashboard/backend/mission_router.py
index 3479172..fe73725 100644
--- a/app/dashboard/backend/mission_router.py
+++ b/app/dashboard/backend/mission_router.py
@@ -32,6 +32,37 @@ class MissionUptimeWebhook(BaseModel):
     payload: Dict[str, Any] = Field(default_factory=dict)
 
 
+def _first_query_param(request: Request, *names: str) -> Optional[str]:
+    for name in names:
+        value = request.query_params.get(name)
+        if value and str(value).strip():
+            return str(value).strip()
+    return None
+
+
+def _parse_query_timestamp(request: Request) -> Optional[datetime]:
+    raw = _first_query_param(request, "timestamp", "time", "event_time")
+    if not raw:
+        return None
+    try:
+        return datetime.fromisoformat(raw.replace("Z", "+00:00"))
+    except Exception:
+        return None
+
+
+def _event_from_query(request: Request) -> MissionCallEvent:
+    call_id = _first_query_param(request, "call_id", "callid", "id", "session_id", "uuid")
+    if not call_id:
+        raise HTTPException(status_code=400, detail="Missing call_id query parameter")
+
+    return MissionCallEvent(
+        call_id=call_id,
+        caller_number=_first_query_param(request, "caller_number", "caller", "from", "number", "phone"),
+        queue_name=_first_query_param(request, "queue_name", "queue", "group", "line"),
+        timestamp=_parse_query_timestamp(request),
+    )
+
+
 def _get_webhook_token() -> str:
     db_token = MissionService.get_setting_value("mission_webhook_token", "") or ""
     env_token = (getattr(settings, "MISSION_WEBHOOK_TOKEN", "") or "").strip()
@@ -175,6 +206,12 @@ async def mission_telefoni_ringing(event: MissionCallEvent, request: Request, to
     return {"status": "ok"}
 
 
+@router.get("/mission/webhook/telefoni/ringing")
+async def mission_telefoni_ringing_get(request: Request, token: Optional[str] = Query(None)):
+    event = _event_from_query(request)
+    return await mission_telefoni_ringing(event, request, token)
+
+
 @router.post("/mission/webhook/telefoni/answered")
 async def mission_telefoni_answered(event: MissionCallEvent, request: Request, token: Optional[str] = Query(None)):
     _validate_mission_webhook_token(request, token)
@@ -204,6 +241,12 @@ async def mission_telefoni_answered(event: MissionCallEvent, request: Request, t
     return {"status": "ok"}
 
 
+@router.get("/mission/webhook/telefoni/answered")
+async def mission_telefoni_answered_get(request: Request, token: Optional[str] = Query(None)):
+    event = _event_from_query(request)
+    return await mission_telefoni_answered(event, request, token)
+
+
 @router.post("/mission/webhook/telefoni/hangup")
 async def mission_telefoni_hangup(event: MissionCallEvent, request: Request, token: Optional[str] = Query(None)):
     _validate_mission_webhook_token(request, token)
@@ -233,6 +276,12 @@ async def mission_telefoni_hangup(event: MissionCallEvent, request: Request, tok
     return {"status": "ok"}
 
 
+@router.get("/mission/webhook/telefoni/hangup")
+async def mission_telefoni_hangup_get(request: Request, token: Optional[str] = Query(None)):
+    event = _event_from_query(request)
+    return await mission_telefoni_hangup(event, request, token)
+
+
 @router.post("/mission/webhook/uptime")
 async def mission_uptime_webhook(payload: MissionUptimeWebhook, request: Request, token: Optional[str] = Query(None)):
     _validate_mission_webhook_token(request, token)
diff --git a/updateto.sh b/updateto.sh
index 84e942f..b0d954e 100644
--- a/updateto.sh
+++ b/updateto.sh
@@ -74,6 +74,16 @@ fi
 
 echo "✅ .env opdateret"
 
+# Guard against host port conflicts before attempting startup
+POSTGRES_BIND_ADDR="${POSTGRES_BIND_ADDR:-127.0.0.1}"
+POSTGRES_PORT="${POSTGRES_PORT:-5432}"
+if podman ps --format '{{.Names}} {{.Ports}}' | grep -E "${POSTGRES_BIND_ADDR}:${POSTGRES_PORT}->5432/tcp" | grep -v "bmc-hub-postgres-prod" >/dev/null 2>&1; then
+    echo "❌ Fejl: Portkonflikt på ${POSTGRES_BIND_ADDR}:${POSTGRES_PORT} (Postgres host-port)"
+    echo "   Sæt en ledig port i .env, fx POSTGRES_PORT=5433"
+    podman ps --format 'table {{.Names}}\t{{.Ports}}'
+    exit 1
+fi
+
 # Stop containers
 echo ""
 echo "⏹️  Stopper containere..."
@@ -82,7 +92,24 @@ podman-compose -f "$PODMAN_COMPOSE_FILE" down
 # Pull/rebuild with new version
 echo ""
 echo "🔨 Bygger nyt image med version $VERSION..."
-podman-compose -f "$PODMAN_COMPOSE_FILE" up -d --build
+if ! podman-compose -f "$PODMAN_COMPOSE_FILE" up -d --build; then
+    echo "❌ Fejl: podman-compose up fejlede"
+    echo "   Tjek logs med: podman-compose -f $PODMAN_COMPOSE_FILE logs --tail=200"
+    exit 1
+fi
+
+# Validate that key containers are actually running after startup
+if ! podman ps --format '{{.Names}}' | grep -q '^bmc-hub-postgres-prod$'; then
+    echo "❌ Fejl: bmc-hub-postgres-prod kører ikke efter startup"
+    podman ps --format 'table {{.Names}}\t{{.Status}}\t{{.Ports}}'
+    exit 1
+fi
+
+if ! podman ps --format '{{.Names}}' | grep -q '^bmc-hub-api-prod$'; then
+    echo "❌ Fejl: bmc-hub-api-prod kører ikke efter startup"
+    podman ps --format 'table {{.Names}}\t{{.Status}}\t{{.Ports}}'
+    exit 1
+fi
 
 # Sync migrations from container to host
 echo ""