Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
Your company has an Exchange Online tenant that contains 2,000 mailboxes.
A partner company named Fabrikam, Inc. uses a third-party messaging solution. The outbound SMTP server for Fabrikam uses an IP address of 131.107.2.22.
You discover that several email messages from the fabrikam.com domain are erroneously marked as spam.
You need to ensure that all the email messages sent from the fabrikam.com domain are delivered successfully to the user mailboxes of your company.
Solution: You enable a DKIM signature.
Does this meet the goal?

You have 1,000 user accounts that are each licensed for Microsoft 365. Each user account has a Microsoft Exchange Online mailbox.
Ten of the user accounts are configured as service accounts for applications. The applications send event notifications to the mailboxes of the service accounts by using SMTP. The developers of each application have delegated access to the mailbox of their respective application. The solution must minimize licensing costs.
What should you do?

Your company has a Microsoft Exchange Server 2019 organization.
You are auditing the Litigation Hold on the mailboxes of the company's research and development department.
You discover that the mailbox of a user named User1 has a Litigation Hold enabled.
You need to discover who placed the Litigation Hold on the mailbox of User1, and when the Litigation Hold was enabled.
Which two actions should you perform? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.

Your company has an Exchange Online tenant.
A partner company named Fourth Coffee also uses Exchange Online.
You need to ensure that the users at your company share free busy information with the users at Fourth Coffee. The solution must ensure that the meeting details included in the calendars of your company users remain hidden from the Fourth Coffee users.
How should you complete the command? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

You have a hybrid deployment between a Microsoft Exchange Online tenant and an on-premises Exchange Server 2019 server.
Users report that the email they send to external recipients is marked as spam.
You need to validate the Reverse DNS and Sender ID data for the on-premises server.
What should you use in the Microsoft Remote Connectivity Analyzer?