Exam 70-345 topic 1 question 86 discussion

HOTSPOT -
A company named Contoso, Ltd. has an Exchange Server 2016 organization that uses an SMTP domain named contoso.com.
Contoso merges with a company named Fabrikam, Inc. Fabrikam uses an SMTP domain named fabrikam.com.
In the Contoso organization, you create an accepted domain for fabrikam.com. You configure the MX records of fabrikam.com to point to the Exchange servers of the Contoso organization. You configure several users in the Contoso organization to have an email address that uses the fabrikam.com SMTP domain.
Users report that when they send email to the fabrikam.com domain, they receive a non-delivery report (NDR) when the recipient is from the Fabrikam organization.
You need to ensure that all of the users who have a fabrikam.com email address can receive email.
What should you do? To answer, select the appropriate options in the answer area.
Each correct selection is worth one point.
NOTE:
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Suggested Answer:
References:
https://technet.microsoft.com/en-us/library/jj657737(v=exchg.150).aspx