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Creating mail users and mail contacts in Exchange Server is essential for managing external email addresses within your organization. Here’s a step-by-step guide to help you set up mail users and mail contacts:

Steps to Creating Mail Users and Mail Contacts

Creating a Mail User

1. Log in to the Exchange Admin Center (EAC):
2. Open your web browser and navigate to the Exchange Admin Center.
3. Log in using your administrator credentials.
4. Navigate to Recipients:
5. In the EAC, go to the "Recipients" section.
6. Click on "Mailboxes" to view the list of mailboxes.
7. Add a New Mail User:
8. Click on the “+” (plus) sign and select “Mail user.”
9. Fill in the required details such as the display name, alias, and external email address.
10. Set the password for the mail user.
11. Configure Mail User Settings:
12. You can configure additional settings such as mailbox features, contact information, and organization details.
13. Review the settings and click “Save” to create the mail user.

Creating a Mail Contact

1. Log in to the Exchange Admin Center (EAC):
2. Open your web browser and navigate to the Exchange Admin Center.
3. Log in using your administrator credentials.
4. Navigate to Recipients:
5. In the EAC, go to the "Recipients" section.
6. Click on "Contacts" to view the list of contacts.
7. Add a New Mail Contact:
8. Click on the “+” (plus) sign and select “Mail contact.”
9. Fill in the required details such as the display name, alias, and external email address.
10. Configure Mail Contact Settings:
11. You can configure additional settings such as contact information and organization details.
12. Review the settings and click “Save” to create the mail contact.

Additional Tips

Managing Mail Users and Contacts:

• You can edit the settings of mail users and contacts anytime by selecting them from the list and updating the details in the details pane.
• Adjust the contact information and organization details as needed to fit your organization’s requirements.

Using PowerShell:

For advanced configurations, you can use Exchange Online PowerShell commands to create and manage mail users and contacts. This is particularly useful for bulk operations or automated scripts.

For more detailed information, you can refer to my YouTube video below.

I hope this helps! If you have any specific questions or need further assistance, feel free to ask.