Bouncing 5.1.0 - Unknown address error 530-'5.7.1 Client was not authenticated

ahmd.khoni · ‎11-30-2015

Hi, I have got message from Ironport that email have been bounce by server,

01 Dec 2015 10:37:53 (GMT +07:00)	Message 18692 is not signed. No domain key profile matches andie.hazairin@killo.com.
01 Dec 2015 10:37:53 (GMT +07:00)	Message 18692 not signed. No DKIM profile matched andie.hazairin@killo.com.
01 Dec 2015 10:37:53 (GMT +07:00)	Message 18692 queued for delivery.
01 Dec 2015 10:37:53 (GMT +07:00)	SMTP delivery connection (DCID 46912) opened from Cisco IronPort interface 172.16.137.10 to IP address 172.16.3.114 on port 25.
01 Dec 2015 10:37:53 (GMT +07:00)	Delivery connection (DCID 46912) successfully accepted TLS protocol TLSv1 cipher ECDHE-RSA-AES256-SHA .
01 Dec 2015 10:37:53 (GMT +07:00)	(DCID 46912) Delivery started for message 18692 to andi@hallooo.com, lenie@hallooo.com.
01 Dec 2015 10:37:58 (GMT +07:00)	(DCID 46912) Message 18692 to andi@hallooo.com bounced by destination server. Reason: 5.1.0 - Unknown address error ('530', ['5.7.1 Client was not authenticated'])
01 Dec 2015 10:37:58 (GMT +07:00)	Start message 18695 on incoming connection (ICID 0).
01 Dec 2015 10:37:58 (GMT +07:00)	A new message 18695 was generated to handle bounce of message 18692.

at server side i already check Anonymous users from recived connector. but why smtp connection wasn’t authenticated ?

Mathew Huynh · ‎12-03-2015

Hello,

Please ensure this connector 172.16.3.114 has anonymous connection allowed.

Also you may need to restart the connector/transport hub.

But i would suggest to reach out to your mail server vendor to double check it.

Thanks,

Matthew