A company uses Exchange Online. A user reports receiving the following non-delivery report (NDR) when sending an email: What should you do?

The correct answer is C. Instruct the sender to wait 24 hours before resending the email. After the recipient rate limit is reached, messages can't be sent from the mailbox until the number of recipients that were sent messages in the past 24 hours drops below the limit. For example, a user sends an email message to 5000 recipients at 09:00 AM, then sends another…

Troubleshoot mail flow issues

Question

A company uses Exchange Online. A user reports receiving the following non-delivery report (NDR) when sending an email:

What should you do?

Options

AInstruct the sender to reduce the email size and resend the email.
BIncrease the Maximum number of recipients in a message value.
CInstruct the sender to wait 24 hours before resending the email.
DIncrease the Maximum size of a message sent value.

How the community answered

(23 responses)

A
4% (1)
B
4% (1)
C
78% (18)
D
13% (3)

Explanation

After the recipient rate limit is reached, messages can't be sent from the mailbox until the number of recipients that were sent messages in the past 24 hours drops below the limit. For example, a user sends an email message to 5000 recipients at 09:00 AM, then sends another message to 2500 recipients at 10:00 AM, and then sends another message to 2500 recipients at 11:00 AM, hitting the limit of 10,000 messages. The user won't be able to send messages again until 09:00 AM the next day. https://learn.microsoft.com/en-us/office365/servicedescriptions/exchange-online-service- description/exchange-online-limits?redirectedfrom=MSDN

Topics

#NDR#non-delivery report#mail flow throttling#retry

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