diff --git a/cron.py b/cron.py
index 2670bd99..3018234f 100644
--- a/cron.py
+++ b/cron.py
@@ -720,11 +720,6 @@ def check_custom_domain():
custom_domain=custom_domain,
domain_dns_url=domain_dns_url,
),
- render(
- "transactional/custom-domain-dns-issue.html",
- custom_domain=custom_domain,
- domain_dns_url=domain_dns_url,
- ),
max_nb_alert=1,
nb_day=30,
)
diff --git a/templates/emails/transactional/custom-domain-dns-issue.html b/templates/emails/transactional/custom-domain-dns-issue.html
deleted file mode 100644
index 42a167e3..00000000
--- a/templates/emails/transactional/custom-domain-dns-issue.html
+++ /dev/null
@@ -1,23 +0,0 @@
-{% extends "base.html" %}
-
-{% block content %}
- {% call text() %}
-
- {{ custom_domain.domain }} does not have the DNS set up correctly
-
- {% endcall %}
-
- {% call text() %}
- Please make sure to set up your domain following the instructions on your domain DNS page at
- {{ custom_domain.domain }} DNS.
- {% endcall %}
-
- {% call text() %}
- Feel free reply to this email if you have any question.
- Best,
- SimpleLogin team.
- {% endcall %}
-
-{% endblock %}
-
-
diff --git a/templates/emails/transactional/custom-domain-dns-issue.txt.jinja2 b/templates/emails/transactional/custom-domain-dns-issue.txt.jinja2
index ef0988fa..df30a432 100644
--- a/templates/emails/transactional/custom-domain-dns-issue.txt.jinja2
+++ b/templates/emails/transactional/custom-domain-dns-issue.txt.jinja2
@@ -1,7 +1,9 @@
-We have detected that your domain {{ custom_domain.domain }} does not have the DNS set up correctly.
+We have detected that your domain {{ custom_domain.domain }} doesn't have the DNS MX records correctly set up.
-Please make sure to set up your domain following the instructions on your domain DNS page at:
-{{ domain_dns_url }}
+Please re-run the MX check on {{ domain_dns_url }} and update them if needed.
+
+Without the MX records correctly set up, emails sent to the {{ custom_domain.domain }}'s aliases
+ aren't properly and reliably handled.
Feel free reply to this email if you have any question.