diff --git a/src/spaceone/identity/error/error_smtp.py b/src/spaceone/identity/error/error_smtp.py
new file mode 100644
index 00000000..cff39675
--- /dev/null
+++ b/src/spaceone/identity/error/error_smtp.py
@@ -0,0 +1,4 @@
+from spaceone.core.error import *
+
+class ERROR_SMTP_CONNECTION_FAILED(ERROR_UNKNOWN):
+    _message = 'SMTP server connection failed. Please contact the administrator.'
\ No newline at end of file