why can i notreceive emails from one specific contact in my safe senders list

Being on the Safe Senders list does not guarantee delivery in every case.

Common reasons this can happen:

1. The message is being blocked before it reaches the mailbox Outlook.com can reject mail during the initial delivery check. If that happens, Safe Senders will not help because the message never reaches Junk Email or Inbox. This is especially relevant when the sender’s domain fails authentication checks or has sender-side delivery problems.
2. The sender needs to fix their mail system If the sender receives a non-delivery report or rejection, the issue is usually on the sender side. The sender should check the delivery log, SMTP response, and any rejection details from Microsoft.
3. The message may be in another folder or affected by mailbox settings Check Junk Email, Deleted Items, Archive, and Other if Focused Inbox is enabled. Also check Settings > Mail > Rules and confirm the sender or domain is not in Blocked senders and domains.
4. Safe Senders only prevents junk filtering after delivery reaches the mailbox Messages from addresses or domains on the safe senders list are not moved to Junk Email, but server-side filtering can still block messages before delivery.
5. Junk list limits can interfere Exchange junk email lists have a cumulative default limit of 510 KB across Safe Senders, Blocked Senders, and Safe Recipients. Also, if Trust email from my contacts is enabled and there are many contacts, that can contribute to exceeding the limit.

What to do:

1. In Outlook.com, search for the sender’s address across All folders.
2. Check Settings > Mail > Rules for any rule moving or deleting mail.
3. Check Settings > Mail > Junk email and confirm the sender is not also listed under blocked senders.
4. Ask the sender to send a test message and check whether they receive a bounce or rejection notice.
5. If they do, the sender or their mail administrator must review their sending configuration and authentication.
6. If needed, add the sender’s full address or domain again under Settings > Mail > Junk email > Safe senders and domains, then select OK and Save.

If the sender’s mail is being rejected before delivery, the fix is on the sender side, not in the Safe Senders list.

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