Hello @ChrisM8792 ,
With a changed From email / domain, you'll want to make sure you've checked the following in your account and network:
Make sure your account is properly setup for self-authentication with the new address/domain
Make sure our domains are safelisted in your new company's network
Make sure your own email addresses are safelisted in your new company's email system
Please reach out to our Delivery team if you're needing more direct, specialized assistance on any of these elements, or if your delivery issues continue after making the changes.
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