diff --git a/conf/app.ini b/conf/app.ini
index 71f59de..0cd9439 100644
--- a/conf/app.ini
+++ b/conf/app.ini
@@ -35,7 +35,7 @@ LFS_JWT_SECRET = __LFS_JWT_SECRET__
 
 [mailer]
 ENABLED = true
-SMTP_ADDR = __DOMAIN__
+SMTP_ADDR = localhost
 SMTP_PORT = 587
 PROTOCOL = smtp+starttls
 FROM = "Gitea" <__APP__@__DOMAIN__>
@@ -46,7 +46,7 @@ FORCE_TRUST_SERVER_CERT = true
 [email.incoming]
 ENABLED = true
 REPLY_TO_ADDRESS = __APP__+%{token}@__DOMAIN__
-HOST = __DOMAIN__
+HOST = localhost
 PORT = 993
 USE_TLS = true
 USERNAME = __APP__