Mail blocking from Microsoft

Question

Actually we are using third party mail provider for our mail system. Sometimes we checked from Microsoft domain, it blocking our mail.

Answer 1

Hi jerom ross

Good day! Thank you for posting to Microsoft Community. We are happy to assist you.

I am truly sorry for the inconvenience this issue has caused you. Based on the description, I understand that you are having trouble sending emails to recipients who are using Microsoft outlook.

To further clarify the issue, I would like to confirm the following information with you.

1. Are recipients using Microsoft personal email accounts hotmail.com/outlook.com/live.com) or Microsoft work/school email accounts?
2. Can recipients receive incoming emails from other external senders?
3. Since you're using a third-party email provider, have you checked with the email provider if there are any issues?
4. You can ask recipients to add the sender's domain to your safe senders list. Safe senders in Outlook.com - Microsoft Support

Looking forward to your reply.

Sincerely,

Roger Shen