Hi @SteveNash ,
Thanks for reaching out to the Community. I’d be happy to provide some assistance with this request, to ensure it gets resolved. To gather a bit more information, have you added a DMARC record to your domain yet?
If not, I’d encourage you to give this a try to see if it helps to resolve. To share some insight, some third-party domains require you to authenticate your sender email address to prevent your emails messages from being flagged as spam. To learn more about this, you can check out our Setting Up Your Email as it touches on this further.
If after giving this a try, you continue to experience troubles, please feel free to connect with us directly. This will allow our support team to get you authenticated, as I wouldn’t have access to any account details here through the Community. They will be able to take a closer look to ensure this gets resolved.
Please let me know if you have any other questions or concerns.