Multiple Hotmail accounts cannot receive verification emails

There is no confirmed Outlook.com/Hotmail-wide incident for gaming verification email shown on Microsoft’s public status page, so the gaming services should first check their delivery logs and use Outlook.com Sender Support while you open an Outlook.com support case with the affected senders and timestamps.

Immediate workaround

Because the codes arrive in Gmail, use that address temporarily for time-sensitive account access. Avoid repeatedly requesting codes in quick succession; some verification systems can rate-limit requests.

Request a sender-side investigation

For each affected gaming service:

1. Ask support to trace a verification message sent to one affected Hotmail address.
2. Provide:
   • Recipient address, partially masked if posted publicly.
   • Exact request date, time, and time zone.
   • Expected sender address or domain.
   • Confirmation that ordinary mail arrives but verification messages do not.
3. Ask for the SMTP delivery result, including the complete NDR/bounce code if Microsoft rejected it.
4. Direct their email administrator to Outlook.com Sender Support. Microsoft specifically says that when one particular message is missing without a visible error, the recipient should ask the sender to use Sender Support ^1^. Sender Support covers reputation, authentication, sending IPs, and Outlook.com delivery issue submission ^2^.

If the sender reports a Microsoft blocking error, they—not the recipient—normally need to resolve their sending-IP or domain reputation. For an Outlook.com/Hotmail consumer destination, Microsoft provides a dedicated sender delisting form; the sender should follow the instructions associated with its exact NDR ^3^.

Check the mailbox settings on Outlook.com web

Since Junk has already been checked, do not repeat that step. On a desktop browser, check these settings for one affected account:

1. Outlook.com → Settings → Mail → Rules
   Remove or disable any rule that deletes, redirects, or moves messages from the gaming sender.
2. Settings → Mail → Forwarding and IMAP
   Ensure unexpected forwarding is not enabled.
3. Settings → Mail → Junk email
   Check Blocked senders and domains for the sender’s address and parent domain. If known, add the legitimate sender/domain under Safe senders and domains.
4. Check the Other tab and set Filter → Sort → Date to rule out messages being hidden by view or sorting settings.

These are Microsoft’s documented checks for specific missing Outlook.com messages ^1^. Adding a safe sender may help with ordinary spam classification, but it cannot repair a message rejected before it reaches the mailbox; that requires sender-side investigation.

Mailbox storage is unlikely to explain this because regular mail still arrives. A full Microsoft cloud mailbox would prevent receiving email generally and would bounce new messages to senders ^1^.

Ask Microsoft to investigate

Microsoft Learn Q&A is a public forum and cannot inspect private Outlook.com mail-flow logs. From Outlook.com on the web:

1. Select Help on the menu bar.
2. Enter a description such as “Verification messages from specific gaming domains missing across multiple Hotmail accounts.”
3. Complete the suggested troubleshooting.
4. Scroll to Still need help?, select Yes, and submit the case ^4^.
5. Include affected sender domains, masked recipient addresses, timestamps with time zones, and any sender-provided SMTP/NDR details.

Also check Microsoft’s public service-health page for a newly posted incident ^5^. Without a published incident, Microsoft provides no general restoration time; an ETA would depend on what the sender or Microsoft support finds.

References

1. Can't send or receive email in Outlook.com | Microsoft Support
2. Sender Support in Outlook.com
3. External senders - Use the delist portal to remove yourself from the blocked senders list and address 5.7.511 Access denied errors
4. Fixes or workarounds for recent issues on Outlook.com | Microsoft Support
5. Microsoft service health status