@@ -1,4 +1,5 @@
 import logging
+import smtplib
 from datetime import datetime
 from typing import Any, Sequence
 
@@ -47,6 +48,8 @@ class EmailService:
             )
         except (dns.resolver.NoAnswer, dns.resolver.NXDOMAIN, dns.exception.Timeout):
             raise DomainNotFound
+        except smtplib.SMTPRecipientsRefused:
+            raise DomainNotFound
         except Exception as exc:
             logger.exception(exc)
             raise Exception(_('Error occured when proceed email sending'))