Unable to send emails to Gmail users.

Question

When attempting to send emails to other users, particularly Gmail users, the email fails to reach the intended recipient. Instead, I received the following email:

mx.google.com rejected your message to the following email addresses:

Your message couldn't be delivered because the recipient's email server (outside Office 365) suspected that your message was spam. To fix this, try to modify your message, or change how you're sending the message, using the guidance in this article: E-mailing Best Practices for Senders. Then resend your message. If you continue to experience the problem, contact the recipient by some other means (by phone, for example) and ask them to ask their email admin to add your email address or your domain name (the text after the "@" symbol in your email address) to their allowed senders list.

Answer 1

Hi @Koutaiba Assaf

Based on my research, it could be a temporary bug. EX719348: Some users' outbound Exchange Online email messages may be marked as spam and not delivered.

The engineering team is currently working on fixing this issue, so please wait for the next update. Thank you for your understanding and support!

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