Authorizing a New Tenant in Microsoft Office 365

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Title: How to Authorize a New Tenant in Microsoft Office 365
Overview: Authorizing a new tenant in Microsoft Office 365 is crucial to ensure smooth email communication without encountering errors such as "Can't send email - NDR 5.7.708 Access Denied, traffic not accepted from this IP."
Procedure:
  1. Login to Office.com:
  • Open your web browser and navigate to Office.com.
  • Enter your credentials (username and password) to sign in to your Office 365 account.
  1. Access the Admin Center:
  • After logging in, click on the Admin tile. This action will take you to the Microsoft 365 Admin Center.
 
  1. Navigate to Support > Help and Support:
  • In the Admin Center, locate and click on Support from the left-hand navigation menu.
  • Select Help and Support from the dropdown menu that appears.
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  1. Compose the Support Message:
  • Click on New Service Request or Contact Support (depending on your interface).
  • Fill out the required fields in the support request form:
      • Issue Type: Select "Email and Calendars" or related category.
      • Subject: Specify something like "Need to Authorize New Tenant IP."
      • Description: Provide details such as: "We have recently added a new tenant to our Microsoft Office 365 environment. However, when attempting to send emails, we encounter the error message 'Can't send email - NDR 5.7.708 Access Denied, traffic not accepted from this IP.' We suspect our new tenant's IP is being blocked. Please assist in authorizing the IP to resolve this issue."
      • Include Tenant Details: Provide relevant tenant information to expedite the authorization process.
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  1. Submit the Support Request:
  • Review the information provided for accuracy.
  • Click Submit or Send to dispatch the support request to Microsoft's support team.
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  1. Follow Up:
  • Monitor your email for updates from Microsoft Support.
  • Once authorization is confirmed, test sending emails again from your new tenant to ensure the issue is resolved.
Conclusion: Following these steps should help resolve the issue of email delivery errors due to IP blocking for your new tenant in Microsoft Office 365. If you encounter any further difficulties or delays, don't hesitate to follow up with Microsoft Support for additional assistance.
Article ID: 3457, , Modified: 9/5/2024 at 2:42 AM

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