diff --git a/conf/app.ini b/conf/app.ini
index 6a7c67ca07..6f4ae897f7 100644
--- a/conf/app.ini
+++ b/conf/app.ini
@@ -106,9 +106,9 @@ HOST =
 ; Do not verify the certificate of the server. Only use this for self-signed certificates
 SKIP_VERIFY = 
 ; Use client certificate
-; USE_CERTIFICATE = true
-; CERT_FILE = custom/mailer/cert.pem
-; KEY_FILE = custom/mailer/key.pem
+USE_CERTIFICATE = false
+CERT_FILE = custom/mailer/cert.pem
+KEY_FILE = custom/mailer/key.pem
 ; Mail from address, RFC 5322. This can be just an email address, or the "Name" <email@example.com> format 
 FROM =
 ; Mailer user name and password