Forwarding Email from Exchange 2019 not working

I have outbound emails filtered through Sophos and in the outbound gateway I have the ip of the firewall.  The client can send emails out normally using outlook.  The issue is when we have a mailbox set up to forward mail to a contact through the recipient / mail flow in the exchange admin center the email gets rejected by Sophos.

This is not an issue with the exchange server as it used to work when filtered through Reflexion. The minute we moved to Sophos Email it started to block any forwarded messages.  Any help would be appreciated.

Thanks!