Microsoft Lync 365 is connecting within our organization, but may be missing additional configurations to allow for connections from outside our organization.
Hello,
Thanks for the question. Settings for Lync 365 typically settings such as those provided in our email settings. You can also view your domain routing visually by using Visual Domain Routing tool. If you require more information, please contact our live technical support team. You can find the contact information listed below.
You can also go to Microsoft's page for troubleshooting this issue. If you have any further questions, please let us know.
Regards,
Arnel C.