From 587f354e52a48a6c7cf3bd77f72c1d345d0ce3b4 Mon Sep 17 00:00:00 2001
From: Christian Cueni <christian.cueni@iterativ.ch>
Date: Mon, 22 Jan 2024 15:38:37 +0100
Subject: [PATCH] Handle invalid recipient email addresses

---
 server/vbv_lernwelt/notify/services.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/server/vbv_lernwelt/notify/services.py b/server/vbv_lernwelt/notify/services.py
index bf792511..84102609 100644
--- a/server/vbv_lernwelt/notify/services.py
+++ b/server/vbv_lernwelt/notify/services.py
@@ -3,6 +3,8 @@ from __future__ import annotations
 from typing import TYPE_CHECKING
 
 import structlog
+from django.core.exceptions import ValidationError
+from django.core.validators import validate_email
 from django.db.models import Model
 from notifications.signals import notify
 
@@ -281,6 +283,13 @@ class NotificationService:
             template_data=template_data,
         )
         emailed = False
+
+        try:
+            validate_email(recipient.email)
+        except ValidationError:
+            log.info("Recipient email is invalid")
+            return f"{notification_identifier}_invalid_email"
+
         try:
             notification = NotificationService._find_duplicate_notification(
                 recipient=recipient,