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AtanasM's avatar
AtanasM
Iron Contributor
Jul 06, 2023

Forwarding to Gmail

I have set up forwarding from Exchange Online account Gmail, but the emails from some providers, for example T-Online are rejected from Gmail. The reason in NDr is that my domain doesn't pass DKIM to send emails from the IP address of Microsoft. I have set up already DMARC,  SPF and DKIM for the domain, but it is ignored by forwarding and it seems that always different IPs from Microsoft are used by forwarding.

exchange online

2 Replies

  • AtanasM's avatar
    AtanasM
    Iron Contributor
    Jul 06, 2023
    I found the solution. It is described in section "Relay pool" in the article below:
    https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/outbound-spam-high-risk-delivery-pool-about?view=o365-worldwide
  • Deleted's avatar
    Deleted
    Jul 06, 2023

    Hi AtanasM 

    Check your SPF,DKIM and DMARC again here https://mxtoolbox.com/NetworkTools.aspx

    except mail forwarding is your mail flow configuration work or not?

     

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