diff --git a/core/admin/mailu/models.py b/core/admin/mailu/models.py
index f73bf0b7..57c82c6b 100644
--- a/core/admin/mailu/models.py
+++ b/core/admin/mailu/models.py
@@ -276,7 +276,7 @@ class Domain(Base):
             f'_{proto}._tcp.{self.name}. 600 IN SRV {prio} 1 {port} {hostname}.' if port in ports else f'_{proto}._tcp.{self.name}. 600 IN SRV 0 0 0 .'
             for proto, port, prio
             in protocols
-        ]+[f'autoconfig.{self.name}. 600 IN CNAME {hostname}.']
+        ]+[f'autoconfig.{self.name}. 600 IN CNAME {hostname}.', f'autodiscover.{self.name}. 600 IN CNAME {hostname}.']
 
     @cached_property
     def dns_tlsa(self):
diff --git a/towncrier/newsfragments/3347.bugfix b/towncrier/newsfragments/3347.bugfix
index a5723885..cefcfd3e 100644
--- a/towncrier/newsfragments/3347.bugfix
+++ b/towncrier/newsfragments/3347.bugfix
@@ -1,2 +1,3 @@
 Update to a newer clamav 1.2.3-45
 Update to snappymail 2.36.4
+Add a new DNS entry for autodiscover (old MUA autoconfiguration)