diff --git a/playbooks/roles/base/exim/templates/exim4.conf.j2 b/playbooks/roles/base/exim/templates/exim4.conf.j2
index a19a3b7a7c..510c34a2f8 100644
--- a/playbooks/roles/base/exim/templates/exim4.conf.j2
+++ b/playbooks/roles/base/exim/templates/exim4.conf.j2
@@ -619,6 +619,9 @@ begin transports
 
 remote_smtp:
   driver = smtp
+  {% if ansible_distribution_version is version('22.04', '>=') -%}
+  message_linelength_limit = 1G
+  {% endif %}
 
 
 # This transport is used for local delivery to user mailboxes in traditional