Hi,
Welcome to the Microsoft forum.
Follow the steps:
- Add domain “company1.com” to Microsoft 365 in EAC: Add a domain to Microsoft 365 - Microsoft 365 admin | Microsoft Learn
- Create a new connector in EAC:
- EAC->Mail flow-> Connectors->Add a Connector
- Connection from “office 365” , Connection to “Parter organization”
- Use of Connector choose “Only when I have a transport rule set up that redirect to this connector”
- Specify the domain (company1.com) and the mail server (mx.hostprovider.com)
- Create a Mail Flow Rule (Transport Rule)
- EAC->Mail flow ->rules->Add a rule
- Apply this rule if the recipient’s domain is “company1.com”
- Do the following: Redirect the message to the following connector “The connector you created”
Hope this helps. Please feel free to contact me for any updates.
feel free to contact me for any updates.