1. Outlook Exchange Settings
2. Microsoft Exchange Server For Mac
3. Microsoft Exchange Account Settings

• Outlook for Office 365 for Mac Office for business Office 365 Small Business Outlook 2016 for Mac Outlook 2019 for Mac More. Less For steps on how to use these settings to set up an initial IMAP account or to add more accounts in the Outlook for Mac Accounts box, see Add an email account to Outlook.
• Office 365 ProPlus is being renamed to Microsoft 365 Apps for enterprise. For more information about this change, read this blog post. Two new security options are now included in the Excel Trust Center in Office 365 under the Security Settings for Dynamic Data Exchange heading.
• Open Mac Mail. If this is the first time you have run Mac Mail, the Add Account wizard will be displayed, in which case you can skip steps 2 and 3. Click Preferences from the Mail menu. Click the Create an account button to open the Add Account wizard. This is located under the Accounts list, on the bottom-left of the window.

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Note

A Microsoft Exchange account is a work or school email account. The organization that gave you the Exchange email account is running a Microsoft Exchange Server, or is using Microsoft Office 365 which uses Exchange Server to provide email.

Office 365 ProPlus is being renamed to Microsoft 365 Apps for enterprise. For more information about this change, read this blog post.

Summary

Two new security options are now included in the Excel Trust Center in Office 365 under the Security Settings for Dynamic Data Exchange heading:

• Enable Dynamic Data Exchange Server Lookup
• Enable Dynamic Data Exchange Server Launch (not recommended)

Outlook Exchange Settings

These new options are intended to help protect users from attackers who use Dynamic Data Exchange (DDE) to spread malware.

More Information

These new options are located in the Excel Trust Center (File > Options > Trust Center > Trust Center Settings > External Content). They're listed as follows.

Microsoft office for mac 1998. A Home Premium version will include 20GB of —Microsoft’s online storage service similar to Apple’s iCloud—as well as 60 minutes of Skype service per month.

Enable Dynamic Data Exchange Server Lookup

Select this option if you want to enable DDE server lookup. If this option is selected, DDE servers that are already running will be visible and usable. By default, this option is selected.

Microsoft Exchange Server For Mac

Enable Dynamic Data Exchange Server Launch (not recommended)

Select this option if you want to enable DDE server startup. If this option is selected, Excel starts DDE servers that are not already running, and enables data to be sent out of Excel. For security, we recommend that you leave this check box cleared. By default, this option is not selected.

Microsoft Exchange Account Settings

For more information about what DDE is, see About Dynamic Data Exchange.