Smtp 550 message was not accepted

Smtp 550 message was not accepted. Smtp 550 message was not accepted. 7. Reason - prohibited file types. Otrs 6.	7. 7. Электронное письмо с ошибками. Smtp 550 message was not accepted. Smtp 550 message was not accepted.
Otrs 8. 228 message is rejected. Smtp 550 message was not accepted. Smtp 550 message was not accepted. Smtp 550 message was not accepted.	Remote server returned '554 5. Smtp 550 message was not accepted. Mail error. Remote server returned '554 5. 7.
Smtp 550 message was not accepted. Ошибка при отправке на почту. Reason - prohibited file types. Recipient address rejected: access denied. {"message":"","status":"fail"}.	Smtp 550 message was not accepted. Roundcube windows. 1 this message is blocked due to security reason. 550 5. Smtp 550 message was not accepted.
Ошибка 550. Smtp 550 message was not accepted. Deliver перевод. Сбой на email. Ошибка при отправке письма.	228 message is rejected. 0 < #5. Smtp 550 message was not accepted. Smtp 550 message was not accepted. Ошибка 550.
228 smtp;550 5. Smtp 550 message was not accepted. Email unavailable. Forwarded message from. Smtp 550 message was not accepted.	Smtp 550 message was not accepted. Roundcube интерфейс. 550 5. Отрс. 7.
Smtp 550 message was not accepted. Ошибка 550. 1 this message is blocked due to security reason. Smtp 550 message was not accepted. 7.	Roundcube. Forwarded message. 0 < #5. Smtp 550 message was not accepted. 00550 ошибка.
Roundcube шаблоны. Otrs 6 smtp 25. 228 smtp;550 5. Exchange 2003. 7.	Smtp exchange. Ошибка smtp outlook. Undeliverable message. Delivery report. 7.
550 5. Otrs 8. Smtp 550 message was not accepted. Smtp 550 message was not accepted. Smtp 550 message was not accepted.	Smtp 550 message was not accepted. Remote server returned '554 5. Roundcube. 7. Smtp 550 message was not accepted.
Deliver перевод. Ошибка 550. 1 this message is blocked due to security reason. 7. Ошибка 550.	Ошибка при отправке письма. Delivery report. Otrs 6. Smtp 550 message was not accepted. Ошибка 550.
Ошибка 550. Smtp 550 message was not accepted. Remote server returned '554 5. Smtp 550 message was not accepted. Сбой на email.	Smtp 550 message was not accepted. Smtp 550 message was not accepted. Smtp 550 message was not accepted. Smtp 550 message was not accepted. 228 message is rejected.