Hub Support | Decile Base

Community Member

March 05 at 09:09 pm

Emails aren't being sent via DecileHub after connecting and wanting to send through Microsoft365 business account

Your message wasn't delivered because the recipient's email provider rejected it.

Diagnostic information for administrators:
Remote server returned '550 5.7.708 Service unavailable. Access denied, traffic not accepted from this IP.

3 replies

21:38

Community Member

Mar 05, 2025 at 21:38

@Houston Searcy will you please look into this?

21:48

Community Member

Mar 05, 2025 at 21:48

Where did you see this message? Was it in Hub or in your Microsoft365 inbox?

18:21

Community Member

Apr 02, 2025 at 18:21

It appears to be an issue when running a trial with Microsoft365. After emailing the Microsoft team they were able to resolve it.

This NDR is generated if you send an email message from an IP address that has a low reputation. The issue is more likely to affect new customers, such as those who have a Microsoft 365 trial subscription.

How do I fix this?

Only an email admin in your organization can fix this issue.
If you're an email admin, and you receive this error during a trial subscription, contact Microsoft Support to request an IP address exception until you assign Exchange Online licenses.

Person Name Person Name

Prospect Name Prospect Name

Prospect Name

Organization Name

Capital Account Name

Emails fail to send via DecileHub; Microsoft365 rejects due to IP access denial.

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Person Name Person Name

Prospect Name Prospect Name

Prospect Name

Organization Name

Capital Account Name

Emails fail to send via DecileHub; Microsoft365 rejects due to IP access denial.

Log In or Sign Up

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