Mail Delivery Subsystem, Delivery Status Notification (Failure)

[Kelly Li1]

Dear Admin,I hope this message finds you well. We have been experiencing a recurring issue with receiving emails for my boss's email address, and we are reaching out to seek your assistance in resolving this matter.Every day, my boss's email address receives an email similar to the one below, and we are uncertain about the cause of this problem:From: Mail Delivery Subsystem <*** Email address is removed for privacy ***> Sent: Monday, September 11, 2023 11:58 AMTo: my boss's email addressSubject: Delivery Status Notification (Failure) Message blocked Your message to&nbs

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