This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
When the emails is sent to gmail its being blocked stating
Delivery has failed to these recipients or groups:
___@___.___ (***********@gmail.com)
Your message wasn't delivered because the recipient's email provider rejected it.
all my records are up to date..
gmail.com suspects your message is spam and rejected it.
| natasha.daniel | Office 365 | gmail.com | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sender | Action Required | |||||||||||
| <br> | --- | --- | --- | --- | --- | |||||||
| Messages suspected as spam |
| How to Fix It |
|---|
| Try to modify your message, or change how you're sending the message, using the guidance in this article: Bulk E-mailing Best Practices for Senders Using Forefront Online Protection for Exchange. 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, to their allowed senders list. |
Was this helpful?Send feedback to Microsoft.
More Info for Email AdminsStatus code: 550 5.7.350
When Office 365 tried to send the message to the recipient (outside Office 365), the recipient's email server (or email filtering service) suspected the sender's message is spam.
If the sender can't fix the problem by modifying their message, contact the recipient's email admin and ask them to add your domain name, or the sender's email address, to their list of allowed senders.
Although the sender may be able to alter the message contents to fix this issue, it's likely that only the recipient's email admin can fix this problem. Unfortunately, Office 365 Support is unlikely to be able to help fix these kinds of externally reported errors.
Original Message Details
| Created Date: | 3/2/2023 11:29:38 PM |
|---|---|
| Sender Address: | *********@*****.com |
| Recipient Address: | *********@gmail.com |
| Subject: | Email check |
Error Details
| Reported error: | 550 5.7.350 Remote server returned message detected as spam -> 550 5.7.1 [2a01:111:f403:700f::715 19] Our system has detected that this;message is likely suspicious due to the very low reputation of the;sending domain. To best protect our users from spam, the message has;been blocked. Please visit; https://support.google.com/mail/answer/188131 for more information. c23-20020aa7c997000000b004ace5dc6b61si945041edt.369 - gsmtp |
|---|---|
| DSN generated by: | PN3P287MB0113.INDP287.PROD.OUTLOOK.COM |
Using Classic Outlook on Windows for personal email, calendar, and contact management
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
I'm not able to validate the gmail.com domain I've tried 3 different email accounts. anyone have a solution for that?
We are experiencing this problem for a whole city, they manually send out business licenses and they are getting rejected. to manually add connectors is crazy in this situation. :(
Additional information:
We have applied the current fix (as mentioned by dapg_032)
From: Office 365
To: Partner organization
Use only when I have a transport rule set up that redirects messages to this connector.
Route email messages through these smart hosts:
Find some ipv4 ips for incoming smtp servers from google
(Route the message using the connector named ... insert name of previously created connector)
We are having the same issues. It is only for one of our domains (so not even our whole tenant...) Mails sent to gmail, or mailboxes hosted by google, that have different domains, are blocked by Google. ticket open since 5 days with Microsoft. No solution, although we suggested changing the outgoing ipv6 ips that are having the issues. I'll probably have to check out the solution with the connector, before people arrive in our office with pitchforks to start a revolution.
Appalling service by Microsoft...
For information; users get the following message back:
550 5.7.350 Remote server returned message detected as spam -> 550 5.7.1 [2a01:111:f400:fe1a::62f 19] Our system has detected that this;message is likely suspicious due to the very low reputation of the;sending domain. To best protect our users from spam, the message has;been blocked. Please visit; https://support.google.com/mail/answer/188131 for more information.
I just wanted to throw a thank you in here. We were having this issue today and setting up a connector using only the IPv4 addresses from GMail's MX record has allowed us to get through to GMail accounts. A lot of our new hires and incoming students who do not yet have accounts with us, use GMail. I hope Microsoft and Google can figure out whatever the heck is going on with this.