Limit emails task retry

helios_auth/auth_systems/pirati.py

@@ -168,7 +168,12 @@ def old_member_to_user_info(member):
 # Celery tasks
 
 
-@shared_task(autoretry_for=(Exception,), max_retries=None, retry_backoff=True)
+@shared_task(
+    autoretry_for=(Exception,),
+    max_retries=160,  # 3 days
+    retry_backoff=True,
+    retry_backoff_max=1800,
+)
 def send_email_task(recipient, subject, body):
     send_mail(subject, body, settings.SERVER_EMAIL, [recipient], fail_silently=False)