diff --git a/src/lang/en.json b/src/lang/en.json
index 134000e7d..6e040fbe4 100644
--- a/src/lang/en.json
+++ b/src/lang/en.json
@@ -57,6 +57,8 @@
"Friendly Name": "Friendly Name",
"URL": "URL",
"Hostname": "Hostname",
+ "locally configured mail transfer agent": "locally configured mail transfer agent",
+ "Either enter the hostname of the server you want to connect to or localhost if you intend to use a locally configured mail transfer agent": "Either enter the hostname of the server you want to connect to or {localhost} if you intend to use a {local_mta}",
"Port": "Port",
"Heartbeat Interval": "Heartbeat Interval",
"Request Timeout": "Request Timeout",