Problems sending emails

[SH query]

I just set up an new MS email account - Cant seem to send emails from it - receive fine - but it just sends a message back from "Administrator" saying as per below - any ideas what the problem is????????



Your message did not reach some or all of the intended recipients.





Subject: test7777777


Sent: 02/04/2019 14:01





The following recipient(s) cannot be reached:





(message name but I have deleted for confidentiality) on 02/04/2019 14:01


This message could not be sent. The client operation failed. Try sending the message again later, or contact your network administrator.





__________________________________________________





Diagnostic information for administrators:


__________________________________________________





Error is [0x80004005-0x00000b22-0x00000501].





Exchange response headers:


request-id: 133e7332-f90f-4580-a10b-eebde12f9e2c


X-ServerApplication: Exchange/15.20.1750.010


X-FEServer: DB8PR06CA0012


X-BEServer: AM0PR0502MB3828


X-CalculatedBETarget: AM0PR0502MB3828.eurprd05.prod.outlook.com


X-RequestId: {D2EE436B-BDCE-4DE7-BD5C-07EBE3AE7361}:40


X-ClientInfo: {370E628A-6264-43D8-943B-0FE36C0B41C0}:127160051


X-ElapsedTime: 272


X-BackEndHttpStatus: 200


X-ResponseCode: 0


X-DiagInfo: AM0PR0502MB3828


X-RequestType: Execute

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