I am not receiving automated emails from NHS login.

Ask NHS login for the complete non-delivery report (NDR), including its SMTP error code and rejected sending IP, because a bounced message is rejected before it reaches your Outlook.com mailbox and that evidence determines whether Microsoft or the NHS sender must act.

1. Obtain the rejection details from NHS login

Ask the NHS login technical team for:

• The complete NDR/bounce text, with personal addresses redacted
• The SMTP status code, such as 550 5.7.511
• The sending IP address
• The date, time, and time zone of a failed attempt
• Whether other Outlook.com, Hotmail, Live, or MSN recipients are affected

Adding login.nhs.uk to Safe Senders is unlikely to fix a server-side rejection because the message never reaches mailbox filtering. If only this sender or domain fails, its mail administrator generally needs to investigate its SPF, DKIM, DMARC, DNS, and sending reputation ^1^.

2. Apply the action matching the NDR

If it says 5.7.511 Access denied or “banned sending IP”:

The NHS mail administrator—not you—should:

1. Open https://sender.office.com.
2. Enter the email address that received the NDR.
3. Enter the sending IP address shown in the NDR.
4. Complete verification.
5. Select Delist IP.

This is the documented resolution for that specific rejection pattern ^2^.

If it cites SPF, DKIM, DMARC, reverse DNS, or reputation:

NHS login’s email administrator must correct or escalate the sender configuration. Microsoft provides a sender-support submission route for mail that complies with its policies but is still rejected; it applies to delivery into Outlook.com, Hotmail, Live, and MSN addresses ^3^.

If it says the recipient mailbox or storage is full:

In Outlook.com, open Settings → General → Storage and free space. Messages sent while Microsoft cloud storage is full are bounced and cannot subsequently be recovered, so NHS login must resend them afterward ^4^.

3. Check whether Microsoft has an active incident

There are public reports of selective Outlook.com incoming-message rejection in November 2026, but that alone does not prove the NHS message is part of the same incident. Check Microsoft’s official public status page for a current advisory ^5^.

If this is a work or school Microsoft 365 mailbox, an administrator should open:

Microsoft 365 admin center → Health → Service health → Exchange Online

If no matching incident appears, the administrator can select Report an issue. Service Support and Helpdesk administrators can view service health ^6^.

4. Escalate an Outlook.com mailbox investigation

For a personal Outlook.com/Hotmail account:

1. Sign in to Outlook.com.
2. Select Help on the menu bar.
3. Search for cannot receive emails.
4. Scroll to Still need help? and select Yes.
5. Request support and provide:
   • The complete NDR and SMTP code
   • Failed-delivery timestamps
   • The NHS sending domain and sending IP
   • Whether unrelated senders are also being rejected

Microsoft Q&A contributors cannot inspect mailbox delivery logs, so this must be handled through Outlook.com Support. Meanwhile, use another email address for time-sensitive NHS login verification if NHS login permits changing the registered address.

References

1. Incoming emails being blocked due to lack of SPF/DKIM/DMARC records on my @outlook.com account - Microsoft Q&A
2. Can't receive emails from certain senders - Microsoft Q&A
3. Sender Support in Outlook.com | Microsoft Support
4. Can't send or receive email in Outlook.com | Microsoft Support
5. Microsoft service health status
6. How to check Microsoft 365 service health