I am not receiving letters from a certain sender

Disclaimer: I noticed that your locale is set to ru-RU, while your question was submitted in English. To ensure consistency and clarity, I will continue responding in English.

Hi @Yulia T ,

Welcome to the Microsoft Q&A forum.

I understand how important it is for you to receive these messages.

Please note that this is a user-to-user support forum. Moderators, contributors including external Microsoft employees cannot directly intervene in Microsoft product features or access back-end systems. Our role is limited to providing technical guidance on reported issues, requests, or ideas only.

Please sign in to Outlook.com in a browser and check your Junk Email, Deleted Items, and Other folders. Then go to Settings > Mail > Junk email, make sure ******@roundabout.ru is not listed under Blocked senders and domains, and add it to Safe senders and domains. Please also check Settings > Mail > Rules and Forwarding for anything that may move or redirect the messages.

If the emails still do not arrive, please ask Roundabout's technical support to send a new test message and provide the complete SMTP rejection message or non-delivery report, if one is generated. If their messages are being rejected by Outlook.com, their email administrator will need to contact Microsoft Support because sender-side delivery blocks cannot be removed from the recipient's mailbox.

Note: Please follow the steps in our documentation to enable email notifications if you would like to receive related email notifications for this thread.