4.21.3

app/templates/emails/transactional/reply-must-use-personal-email.txt

@@ -0,0 +1,11 @@
+{% extends "base.txt.jinja2" %}
+
+{% block content %}
+We have recorded an attempt to send an email from your alias {{ alias.email }} using {{ sender }}.
+
+Please note that sending from this alias only works from alias's owning mailboxes, that are
+    {{ mailbox_emails|join(", ") }}
+
+This is to protect against "email spoofing", i.e. someone else sending emails from your mailbox.
+If {{ sender }} can indeed send emails from your alias, you can add it to the allow list on {{authorize_address_link}}
+{% endblock %}