Email Connector Returning Undeliverable

I am using the email connector to automate and consolidate some daily reports that I receive. When I have emails sent to the email address supplide by domo for the connector occasionally I get an undeliverable message. It says 'that When Office 365 tried to send your message, the receiving email server outside Office 365 reported an error.'

This does not happen every time an email is sent to it. usually about 20% of the time

The error is 

I opened a DOMO support ticket, but have not heard back for more than a week. I am wondering if anyone else has had this issue and has been able to resolve it.