Hi @Shayna R. Moore,
Welcome to Microsoft Q&A forum.
Thank you for sharing the details of your concern. I understand how important it is to maintain smooth communication, and I appreciate the steps you have already taken to check for rules, blocked senders, and the Junk folder.
Since your contact can receive your emails but you are not receiving their responses, the issue is likely related to mail delivery or filtering rather than your account settings. Here are the recommended next steps to help identify and fix the issue:
- Check quarantine or security filters
- If your organization uses Microsoft Defender or another email security solution, the message may be quarantined.
- Ask your IT administrator to run a Message Trace in the Microsoft 365 Security & Compliance Center to confirm delivery status.
For your reference, please refer to this article:
- For modern Modern Exchange Admin Center: Message trace in the new EAC in Exchange Online.
- For classic Exchange Admin Center: Run a message trace and view results in the classic EAC.
2. Verify sender’s email authentication (SPF/DKIM/DMARC)
- If the sender’s domain has misconfigured email authentication, Microsoft 365 may reject or quarantine the message.
- Ask the sender to review their email logs or contact their IT team for verification.
I hope this information is helpful. Please follow these steps and let me know if it works for you. If not, we can work together to resolve this.
Thank you for your patience and your understanding. If you have any questions or need further assistance, please feel free to share them in the comments on this post so I can continue to support you.
I look forward to your thoughts on this.
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