diff --git a/data/other/firewall.yml b/data/other/firewall.yml
index 882c6aa95..9a6ff66e5 100644
--- a/data/other/firewall.yml
+++ b/data/other/firewall.yml
@@ -1,10 +1,10 @@
 uPnP:
     enabled: false
-    TCP: [22, 25, 53, 80, 443, 465, 993, 5222, 5269, 5290]
+    TCP: [22, 25, 53, 80, 443, 465, 587, 993, 5222, 5269, 5290]
     UDP: [53]
 ipv4:
-    TCP: [22, 25, 53, 80, 443, 465, 993, 5222, 5269, 5290]
+    TCP: [22, 25, 53, 80, 443, 465, 587, 993, 5222, 5269, 5290]
     UDP: [53, 5353]
 ipv6:
-    TCP: [22, 25, 53, 80, 443, 465, 993, 5222, 5269, 5290]
+    TCP: [22, 25, 53, 80, 443, 465, 587, 993, 5222, 5269, 5290]
     UDP: [53, 5353]