diff --git a/core/assets/run.sh b/core/assets/run.sh
index d5a08da..df4700f 100755
--- a/core/assets/run.sh
+++ b/core/assets/run.sh
@@ -126,6 +126,9 @@ base_url: $HYPERKITTY_URL
 api_key: $HYPERKITTY_API_KEY
 EOF
 
+# Generate the LMTP files for postfix if needed.
+mailman aliases
+
 # Now chown the places where mailman wants to write stuff.
 chown -R mailman /opt/mailman