My email will not receive emails from 2 senders properly.

Question

My email will not receive emails from 2 senders properly.

Al's Truck and Tractor Repair LTD 0

I have 2 senders that their emails always used to come through. Now they do not. They do not go to any other folder as well. I check by blocked sender list. They are not on it. I added them to a safe sender and still no success. With the one company it is anyone who sends from their domain. Their domain has also been added to my safe domain list.

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Answer 1

Jeronimo Fuerte 44,575 Independent Advisor

Sorry to hear that you’re having trouble with this. Receiving the message in Gmail does not completely rule out a sender-side issue, because Outlook.com applies its own filtering based on the sender’s domain, authentication, and mail-server reputation.

Please let me know whether the sender receives a non-delivery report and, if so, share the exact error code while removing any personal information.

Since you have already checked your storage, rules, Junk folder, and Safe Senders list, the message may be getting rejected before it reaches your mailbox. A Safe Senders entry cannot override a server-level rejection. Microsoft advises the sender or their email administrator to use Sender Support for Outlook.com to investigate their domain/IP reputation and email authentication.

https://support.microsoft.com/outlook/sender-support-in-outlook-com

Al's Truck and Tractor Repair LTD 0 Reputation points

2026-07-31T14:59:37.1933333+00:00

On the senders End the email shows as sent and does not recieve a non delivery report
Jeronimo Fuerte 44,575 Reputation points Independent Advisor

2026-07-31T23:58:49.92+00:00

Thanks for confirming. However, seeing the message in the Sent folder and not receiving a non-delivery report only confirms that the sender’s email system accepted the message for delivery; it does not confirm that Outlook.com received it.

Because messages from an entire company domain are affected, the company’s email administrator should check their outbound mail logs or message trace to determine whether Outlook.com accepted the messages. They should also verify the domain’s configuration, as well as the reputation of the sending IP address.

They need to use Microsoft’s Sender Support guidance if their logs show delivery problems involving Outlook.com:

https://support.microsoft.com/outlook/sender-support-in-outlook-com

Since the messages do not appear in Junk and adding the domain to Safe Senders did not help, this is unlikely to be a normal mailbox-level junk setting. Safe Senders can help when a received message is placed in Junk, but it cannot correct an upstream delivery or authentication problem.