Hi everyone, I have consistently been getting Delivery Failure notification and a text file containing the below output

Arrival-Date: Fri, 8 Nov 2024 07:04:16 -0800 (PST)

Message-Id: <LV3PR17MB72135F68F25E86173B78078AAF5D2@LV3PR17MB7213.namprd17.prod.outlook.com>
Final-Recipient: rfc822; emails.5022693_SB1.1291.306ad962c7@5022693-sb1.email.netsuite.com
Action: failed
Diagnostic-Code: smtp; 550 4.2.1 Persistent Transient Failure: Mailbox disabled, not accepting messages
Status: 4.2.1

Does anyone know what is the root cause of this issue or how to resolve this ?