Remove Block from Email on email exchange

Hi Sew Many Things Sewing Center

Thank you for posting your question in Microsoft Q&A regarding the email blocking issue you are experiencing.

Depending on whether the issue relates to sending or receiving emails, try checking these quick steps first:

Scenario 1: If sending is blocked

• Visit https://security.microsoft.com/restrictedusers to check if the user is listed under Restricted Users (sign in with your admin account). If the user is listed, select their name and click Remove restriction
• Go to Exchange Admin Center > Mail Flow > Rules to review mail flow rules. Looking for any rules that may block or redirect outbound messages and edit or disable the rule if necessary. 

Scenario 2: If receiving is blocked

• Visit https://security.microsoft.com/tenantAllowBlockList to check if the sender or domain is listed in the Tenant Allow/Block List: search for the sender’s email address, domain, or IP. If it appears under “Blocked,” select and remove the entry. Optionally, you can add the sender to the “Allow” list to prevent future blocks.
• Check the Quarantine portal by going to https://security.microsoft.com/quarantine. > Use filters to locate the blocked message > Select the message and click Release to deliver it to your inbox. Optionally, you can click Report as Not Junk
• In Outlook or Outlook Web App : check the Junk Email folder for the missing message. If you find it, right-click and select “Mark as Not Junk,” or simply move it to your inbox.

Should the issue persist, kindly share more details to help us support you more efficiently:

• Is the block occurring with a specific sender/recipient or all emails?
• Are there any error messages or bounce-back notifications?
• Are you managing your own mailbox, or are you an administrator handling this for others?

Additionally, if you need to reach out to Microsoft Support:

• Contact Microsoft Support via Phone:  You can reach Microsoft Support directly through their phone service. Please refer to this link for the appropriate contact number based on your region: Customer service phone numbers - Microsoft Support 
• Support ticket submission via Admin Center portal:

For more details on how to get help from Microsoft 365 support can be found here: Get support - Microsoft 365 admin | Microsoft Learn 

I truly hope one of these options helps you move forward. Please let me know if you have any further questions. 

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