How to: Allow application to relay through Exchange server

When having applications to explicity relay mail inside or outside your network with Exchange server you might have some problems. This can be solved by creating a Receive connector in your Exchange infrastructure. This can be done as below:

Open Exchange Management Console
Navigate to Server Configuration and Hub Transport
Select the server
Right click on the Receive connector area
Select New Receive Connector
Enter the name for the connector
Select Custom
On the Local Network settings click Next
On the Remote Network setting enter the IP address or range from where the emails will be sent
Once created open the properties of the connector
Open the Permissions Group tab
Tick Anonymous Users and Exchange Servers
Open the Authentication tab
Tick Transport Layer Security (TLS)
Tick Externally Secured (for example, with IPSEC)

Try to send the email and there you have it.

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