If the ixi-UMS Business should be installed on the same server as the MS Exchange Server, please not the article:
Exchange Server and ixi-UMS Business on the same Server
Open the Microsoft Exchange Admin Center and navigate to the mail flow - receive connectors.
Start the wizard via the plus-sign to set up a "new receive connector".
Appoint a name and select "Custom"
As the IXI-UMS is located in the local network by default, you can select "Internal" as type.
In a more complex environment, please adjust the settings according to your organization.
Depending on which setting you have selected, various settings are queried now, which can be changed any time later on, however.
Click on "Next".
State the IP-address of the ixi-UMS Business Server,
After that, please open the Connector entry and remove all the checkmarks at "security"
At "Permission Groups", "Anonymous users" must be marked
Click on "save" in order to create the Receive Connector
Version 7