diff --git a/store.py b/store.py
index 5df6819..4ae8cb8 100644
--- a/store.py
+++ b/store.py
@@ -236,6 +236,8 @@ class Mail(object):
         """
         if 'opensmtpd' in CONFIG['core']['smtpd_type']:
             is_postfix = False
+        else:
+            is_postfix = True
         # Reset parsing error message
         self.parse_error = ""