Delivery Status Notification (Failure)
Delivery to the following recipient failed permanently: sdvan@ya.ru
Technical details of permanent failure:
550 5.7.1 No such user! 1755872658-HOVN9c1FNCg0-EFci0v1y
Technical details of permanent failure:
550 5.7.1 No such user! 1755872658-HOVN9c1FNCg0-EFci0v1y
68a87e82a4123.rfc822-headers