I am not receiving emails from some senders since the last 3-4 months

Hi Oblivion, this is Kimberly. I'm glad to assist you today.

You're definitely doing the right things by checking storage, spam, and rules already. Here's another way to pinpoint the issue, just follow this guide:

1. Check Junk, Other (Focused Inbox), and Quarantine

Ensure the missing messages didn’t land in the Junk or Other tab (if Focused Inbox is enabled).

If you find anything, mark it as Not Junk, or add the senders to your Safe Senders list so future emails go directly to your Inbox.

Also, if you're on Microsoft 365, check the Quarantine section:

Go to security.microsoft.com/quarantine and search for the sender’s emails. You can release or whitelist them if found.

2. Review Email Rules and Blocked Senders

In Outlook Web, go to Settings → Rules (or Inbox Rules) and ensure there’s nothing diverting specific emails to other folders or deleting them.

Also check the Blocked Senders list and remove any entries that shouldn’t be there.

3. Run a Message Trace (Admin Only)

If you're using a work or school account, and you have access to the Exchange Admin Center (or Microsoft 365 Admin Center), perform a message trace:

It lets you confirm whether the emails from particular senders actually reached your mailbox, were blocked, quarantined, or otherwise diverted.

4. Antivirus/Firewall Checks

Occasionally, antivirus or firewall software (either on your device or managed by your organization) can inadvertently block emails from certain senders. Try temporarily disabling them or adding Outlook to trusted apps to test.

5. Check for Account Compromise or Forwarding

On some forums, users have reported that missing emails were due to hidden forwarding rules or account compromise:

Reset your password and enable multi-factor authentication if you haven't already.

Review any forwarding rules within your Outlook settings to ensure emails aren't being silently redirected.

6. Ask the Sender to Investigate

If everything looks normal on your end, reach out to the sender:

Ask them to check their delivery logs or bounce-back error messages. Sometimes, their email system may be blocked by Microsoft or misconfigured (e.g., missing SPF, DKIM, DMARC).

Bounce-back messages often include a reason or error code (like 550, 5.x.x), which can be very helpful to diagnose the issue.

Should you have more questions, please let me know.

Best regards,

Kimberly