[Javacad-develop] Delivery Status Notification (Failure)

[Mail D. S. <MAI...@sm...>]

The following message to <rc...@na...> was undeliverable.
The reason for the problem:
5.4.7 - Delivery expired (message too old) 554-'5.7.1 Service unavailable; Client host [200.45.48.8] blocked using spamsource.mail.yandex.net; Blocked by spam statistics - see http://feedback.yandex.ru/?from=mail-rejects&subject=200.45.48.8'