Enable SMTP authentication for Outlook 2016-2019

Applies to: Plesk-Hosted email.

Enabling SMTP authentication.

• Open Outlook
• Click on the Files menu tab and select Account Settings. The Account Settings box appears. Select Account Settings again.
• Select your email account in the list, it might be labeled with your name of domain.
• Click on the account to highlight it, and click on the Change icon above it: The Internet E-mail Settings appear.
• Under the Server Information section, in the box marked Outgoing mail server (SMTP) check that it is set to your Plesk server name (psaXXX.his.com) or Zimbra server name (xxx.his.com)
• Click the button More Settings... in the lower right-hand corner. The Internet Email Settings box appears.
• Click on the tab Outgoing Server.
• Click the check box My outgoing server (SMTP) requires authentication, and verify that the box Use same settings as my incoming mail server is selected.
• Click the Advanced tab
• Change the Outgoing server (SMTP) from 25 to 465 *. Click OK.
• Make Sure Encryption is set SSL/TLS for port 465
• Click OK to close the Internet Email Settings box.
• Click the Next button to test your settings.
• Click the Finish button to close the Internet E-mail Settings box.
• Click the Close button to close the Account Settings box.

SMTP authentication has now been enabled.