diff --git a/a-lec.org.zone b/a-lec.org.zone
index 7005de7..926b314 100644
--- a/a-lec.org.zone
+++ b/a-lec.org.zone
@@ -88,6 +88,7 @@ _stun._udp              IN SRV      5 0 3478 xmpp
 _turn._tcp              IN SRV      5 0 3478 xmpp
 _turn._udp              IN SRV      5 0 3478 xmpp
 _xmpp-client._tcp       IN SRV      5 0 5222 xmpp
+_xmpp-client._tcp       IN SRV      5 1  443 xmpp
 _xmpp-server._tcp       IN SRV      5 0 5269 xmpp
 _xmpps-client._tcp      IN SRV      5 0 5223 xmpp
 jabber                  IN SRV      5 0 5269 xmpp