To set up Outlook 2016 for macOS to access your Exchange account at Indiana University:

This issue occurs when you send an email message that's larger than the Exchange Web Services (EWS) message size limit that's configured on the Exchange server. You can increase the message size limit on the Exchange server to allow for larger email messages to be sent from Outlook for Mac clients and other EWS clients. Use Server Settings preferences in Mail to change options for an account’s incoming and outgoing (SMTP) mail servers. To change these preferences in the Mail app on your Mac, choose Mail Preferences, click Accounts, then click Server Settings. Sign in with PIN or smartcard. Ask your Microsoft Exchange account administrator to tell you which proxy server to use to connect to the Microsoft Exchange server. For information about how to configure a connection to a proxy server, see Mac OS Help. I'm not receiving e-mail or other items in my Exchange account. Exchange account basic settings. Get the essential productivity tools that just keep getting better with Microsoft 365. Exchange Online is a hosted solution that you can get by itself or with a Microsoft 365 subscription. Exchange Server 2019 is an on-premises solution.

1. On the welcome screen that appears when you start Outlook for the first time, select Add Account. The 'Accounts' preference window will open; if neither it nor the welcome screen appears, from the Tools menu, select Accounts.
2. In the bottom left of the 'Accounts' preference window, click the + (plus sign) button, and then select New Account....
3. In the window that opens, enter your Exchange account email address (for example, dvader@iupui.edu), then click Continue.
   If Outlook doesn't automatically detect that you're configuring an Exchange account, click Choose the Provider, and then Exchange.
4. In the new window, enter the following information, making sure Configure automatically is selected:
   • Method: From the pull-down menu, select User Name and Password.
   • E-mail address: Your Exchange account email address, for example, dvader@iupui.edu
   • DOMAINusername or Email:ADSusername, replacing username with your IU username.
   • Password: Your IU passphrase
   • Server (optional): Usually not necessary to complete this field, but you may enter https://ews.exchange.iu.edu/ews/exchange.asmx
5. Click the Add Account button, and then click Done.
6. After the initial sync is complete, with the 'Accounts' window still open and your new Exchange account selected, click Advanced, and verify the following settings:
   • Microsoft Exchange
     • Server:https://ews.exchange.iu.edu/ews/exchange.asmx
     • Check Use SSL to connect.
   • Directory services
     • Server: Optionally, add one of the following servers to use directory services:
       • IU-MSSG-ADSDC01.ads.iu.edu
       • IU-MSSG-ADSDC02.ads.iu.edu
       • IU-MSSG-ADSDC03.ads.iu.edu
       • IU-MSSG-ADSDC04.ads.iu.edu
       • IU-MSSG-ADSDC05.ads.iu.edu
       • IU-MSSG-ADSDC06.ads.iu.edu
       • IU-MSSG-ADSDC07.ads.iu.edu
       • IU-MSSG-ADSDC08.ads.iu.edu
     • Check Use SSL to connect.
7. Adjust settings in the Delegates and Security tabs as needed. Consult your IT support personnel regarding these settings.
8. Click OK to exit the advanced settings.
9. Click the Show All button to reveal the other Outlook settings, and then click Calendar. Next to 'Default time zone for new events:', make sure it is set to the correct time zone. Especially if you have an Indiana city set for your Mac's system-wide time zone setting, make sure it is not set to Indiana (East), but instead to Eastern Time (US & Canada).
10. Close the preferences window to begin using Outlook.

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