Configure Microsoft Exchange for inbound mail

Products

• Email Security.cloud

Issue/Introduction

 Steps on how to configure the receive connectors for Microsoft Exchange server(s). 

Environment

Email Security cloud

Microsoft Exchange

Microsoft 365 services

Resolution

To accept inbound mail, you need to configure a receive connector within Microsoft Exchange. This article covers Microsoft Exchange 2010, 2013, and 2016.

Exchange 2016

Use the EAC to create an Internet Receive connector on Mailbox servers

1. In the EAC, go to Mail flow > Receive connectors, and then click Add ()
2. The New receive connector wizard opens. On the first page, configure these settings:
   • Name: Type something descriptive. For example, Internet Receive Connector.
   • Role: Select Frontend Transport.
   • Type: Select Internet.
3. Click Next.
4. On the last page of the wizard, do one of these steps in the Network adapter bindings section:
   • If you're recreating an Internet Receive connector to replace the missing default Receive connector named Default Frontend on the Mailbox server, leave the default values of IP addresses: (All available IPv4) and Port: 25 (when you click Finish, you won't receive an error message).
   • If you're creating an Internet Receive connector while the default Receive connector named Default Frontend still exists on the Mailbox server, perform these steps:
     1. Select the default entry IP addresses: (All available IPv4) and Port: 25, and then click Edit ().
     2. In the Edit IP address dialog that opens, configure these settings:
        • Address: Select Specify an IPv4 address or an IPv6 address, and type in a valid local IP address to use for the connector.
        • Port: Leave the default value 25 selected.
     3. Click Save.
        
        Note: After you've created the new Internet Receive connector on the Mailbox server, be sure to modify the local IP address settings in the properties of the default Receive connector named Default Frontend . You'll need to go to Scoping > Network adapter bindings in the properties of the connector, and then select a different local IP address to replace the default IP addresses: (All available IPv4) and Port: 25 entry.
5. Click Finish.

Verify that the Receive connector works

To verify that you have successfully created a Receive connector to receive messages from the Internet, test that you can send mail from an outside source and one of your users can receive it. If you can receive mail, you know that the configuration worked successfully.