Our company domain is being flagged as incorrect by HubSpot, so when we add colleagues to the CC field of an email, they do not receive it. HubSpot indicates that previous emails have not been delivered to that address, which is incorrect as it used to work fine. The issue occurred because our domain was unreachable for a week due to problems with Microsoft, causing our domain to not function properly for a short period.
The domain has since been fixed, but HubSpot still does not deliver emails to it.
How do you suggest we resolve this issue?
Currently, all emails sent outside of HubSpot are working fine, so the problem only occurs when the email is sent through HubSpot.
