your message couldn't delivered because weren't recognized valid sender. common reason email address suspected of sending spam , it's no longer allowed send messages outside of organization. contact email admin assistance.
diagnostic information administrators:
generating server: am4pr07mb1537.eurprd07.prod.outlook.com
*** email address removed privacy ***
remote server returned '550 5.1.8 access denied, bad outbound sender'
original message headers:
received: am4pr07mb1540.eurprd07.prod.outlook.com (10.165.249.8) am4pr07mb1537.eurprd07.prod.outlook.com (10.165.248.153) microsoft smtp server (version=tls1_2, cipher=tls_ecdhe_rsa_with_aes_256_cbc_sha384_p256) id 15.20.260.2; fri, 24 nov 2017 11:01:59 +0000 received: am4pr07mb1540.eurprd07.prod.outlook.com ([fe80::3dd9:9d67:fcf3:1ddc]) am4pr07mb1540.eurprd07.prod.outlook.com ([fe80::3dd9:9d67:fcf3:1ddc%13]) mapi id 15.20.0260.004; fri, 24 nov 2017 11:01:59 +0000 content-type: application/ms-tnef; name="winmail.dat" content-transfer-encoding: binary
hi omstc,
may know if using office 365 account? if so, please let admin go office 365 portal > exchange admin center > protection > action center , check if account is under action center, if so, please let admin remove , check issue.
thanks,
baron
Outlook.com / Email / Sending, receiving, and reading email
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