Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

The mail server responded: 5.7.1 [VO-1] Message blocked

  • 1 reply
  • 1 has this problem
  • 5 views
  • Last reply by Matt

more options

The mail server responded: 5.7.1 [VO-1] Message blocked

I get the above on all messages I try to send. What's going on here? Are all messages blocked or are they sent? Can someone please give us an answer.

Thanks, Brad

The mail server responded: 5.7.1 [VO-1] Message blocked I get the above on all messages I try to send. What's going on here? Are all messages blocked or are they sent? Can someone please give us an answer. Thanks, Brad

All Replies (1)

more options

That error message from googling it appears to be related to Microsoft o365 and in particular content restriction placed by the administrator of your organization. But that messages continues with blocked for spam content. Are you sure you have posted the entire message?