diff --git a/mozilla/mailnews/mailnews.js b/mozilla/mailnews/mailnews.js
index cae8315a9d8..45038b7b5e1 100644
--- a/mozilla/mailnews/mailnews.js
+++ b/mozilla/mailnews/mailnews.js
@@ -335,7 +335,7 @@ pref("mail.server.default.delete_mail_left_on_server", false);
 pref("mail.server.default.valid", true);
 pref("mail.server.default.abbreviate",true);
 pref("mail.server.default.isSecure", false);
-pref("mail.server.default.useSecAuth", false);
+pref("mail.server.default.useSecAuth", true);
 pref("mail.server.default.override_namespaces", true);
 
 pref("mail.server.default.delete_model", 1);
diff --git a/mozilla/modules/libpref/src/init/mailnews.js b/mozilla/modules/libpref/src/init/mailnews.js
index cae8315a9d8..45038b7b5e1 100644
--- a/mozilla/modules/libpref/src/init/mailnews.js
+++ b/mozilla/modules/libpref/src/init/mailnews.js
@@ -335,7 +335,7 @@ pref("mail.server.default.delete_mail_left_on_server", false);
 pref("mail.server.default.valid", true);
 pref("mail.server.default.abbreviate",true);
 pref("mail.server.default.isSecure", false);
-pref("mail.server.default.useSecAuth", false);
+pref("mail.server.default.useSecAuth", true);
 pref("mail.server.default.override_namespaces", true);
 
 pref("mail.server.default.delete_model", 1);