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Raginho's avatar
Raginho
Copper Contributor
Oct 31, 2022

Your message couldn't be delivered because the recipient's email server (outside Office 365) suspect

Hi,

 

issue has lasted for months already. First i thought issue was on gmail side (when i tried to reply to emails which were sent from @gmail.com) , but now i discovered that i can`t reply to 90% of the emails I have received. Mails are received from different domains and all I try to do is to reply to an email ... What is going on and how to fix this (who can fix this?)!)

Delivery has failed to these recipients or groups:

Your message couldn't be delivered because the recipient's email server (outside Office 365) suspected that your message was spam. 

  • EmekaNgene's avatar
    EmekaNgene
    Brass Contributor
    Hello Raginho

    Please confirm if you are experiencing this issue when you send email from OWA (Outlook.office.com) or outlook desktop client or both.

    Also confirm if you have SPF,DKIM and DMARC set up for your domain.

    Use the Microsoft header analyzer below to check the message header of the email, to see the spam confidence level (SCL), I suspect that your outbound emails might be leaving through the High risk delivery pool

    https://mha.azurewebsites.net/
    • Raginho's avatar
      Raginho
      Copper Contributor
      Hi,

      i am experiencing this issue when replying emails from outlook.com (through browser) and also via mobile app.

      To be precise now, I first noticed this issue when once again was replying to email chain from Cooperative. I had been writing with Cooperative for years and suddenly emails got stuck, so I first thought that issue must be on Gmail side. But now I can`t even reply to travel agent, who has nothing to do with gmail.com mail address - my mails are blocked.

      I have not set up any additional measures for my domain (not even sure what you are talking about 🙂 )

      Really need help here .. 😞

      Thanks!
      Raginho
    • Raginho's avatar
      Raginho
      Copper Contributor
      Thanks for the link!

      I checked it and findings were following:

      SPF Record Check - no issues reported
      DKIM - that i could only check for gmail and not outlook, according to that link...
      DMARC
      Only 1 founding: Policy Not Enabled DMARC Quarantine/Reject policy not enabled (mxtoolbox)
      but this seems to be okay, as it just shows that there is not additional protections set up..?!

      Thanks
      • Raginho's avatar
        Raginho
        Copper Contributor
        Hi,

        an update reg. the issue.

        I now tried to send email to myself (to my gmail account) , just a test email and I can`t even do that. Same error message popping up once again.

        What on earth is going on? Anybody??

        Thanks!
        R.

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