Exam MS-203 topic 2 question 26 discussion

Actual exam question from Microsoft's MS-203

Question #: 26
Topic #: 2

You have a Microsoft Exchange Online tenant that uses a third-party email gateway device.
You discover that inbound email messages are delayed.
The gateway device receives the following error message when sending email to the tenant.
4.7.500 Server busy, please try again later.
You need to prevent inbound email delays.
What should you configure?

A. Organization Sharing
B. an MX record for the domain
C. a transport rule
D. a connector

Show Suggested Answer

Suggested Answer: D 🗳️
Reference:
https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/use-connectors-to-configure-mail-flow/use-connectors-to-configure-mail-flow

by ZetaZeti at Oct. 28, 2021, 7:45 a.m.

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ZetaZeti

Highly Voted 2 years, 7 months ago

Correct. The slow down is caused by the fact that the mails arrive to Exchange through the gateway. Since Exchange is unaware that the gateway is the only source of mails, when too many of them arrive contemporarily, it become suspicious and activates the throttle mechanism. If you set up a connector that warns Exchange of the gateway presence, no throttling is activated.

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