Open the Exchange Management Console. Perform one of the following steps:

1. On a computer that has the Edge Transport server role installed, select Edge Transport, and then in the work pane, click the Receive Connectors tab.
   
   
2. To create a Receive connector on a Hub Transport server role, in the console tree, expand Server Configuration, and select Hub Transport. In the result pane, select the server on which you want to create the connector, and then click the Receive Connectors tab.
   
   

In the action pane, click New Receive Connector. The New SMTP Receive Connector wizard starts.

On the Introduction page, follow these steps:

1. In the Name: field, type a meaningful name for this connector. This name is used to identify the connector.
   
   
2. In the Select the intended use for this connector: field, select the usage type for this connector. The usage type determines the permissions that are granted to sessions that connect to the Receive connector and the supported authentication mechanisms.
   
   Client   Client Receive connectors are used to receive e-mail from users of Microsoft Exchange. This connector will be configured to only accept client submissions from authenticated Microsoft Exchange users. The Client usage type is only available for Receive connectors that are configured on Hub Transport servers.
   
   Custom   Select this option to create a customized connector that will be used to connect with systems that are not Exchange servers.
   
   Internet   Internet Receive connectors are used to receive e-mail from servers on the Internet. This connector will be configured to accept connections from anonymous users.
   
   

   Note:

   We strongly recommend against configuring Receive connectors to accept anonymous connections from unknown IPv6 addresses. If you configure a Receive connector to accept anonymous connections from unknown IPv6 addresses, the amount of spam that enters your organization is likely to increase. Currently, there is no broadly accepted industry standard protocol for looking up IPv6 addresses. Most IP Block List providers do not support IPv6 addresses. Therefore, if you allow anonymous connections from unknown IPv6 addresses on a Receive connector, you increase the chance that spammers will bypass IP Block List providers and successfully deliver spam into your organization. For more information about Exchange 2007 SP1 support for IPv6 addresses, see IPv6 Support in Exchange 2007 SP1 and SP2. For more information about connection filtering, how to add IP addresses to the IP Allow list and IP Block list, and how to configure IP Block List provider services and IP Allow List provider services, see Configuring Connection Filtering.

   Internal   Internal Receive connectors are used to receive e-mail from servers within your Exchange organization. This connector will be configured to only accept connections from Exchange servers.
   
   Partner   Partner Receive connectors are used to receive e-mail from partner domains. This connector will be configured to only accept connections from servers that authenticate with Transport Layer Security (TLS) certificates for SMTP domains that are included in the list of domain-secured domains. You can add domains to this list by using the TLSReceiveDomainSecureList parameter in the Set-TransportConfig command.
   
   For more information about Receive connector usage types, see Receive Connectors. Click Next.
   
   

On the Local network settings page, click Add. The Local network settings page appears only if you selected a usage type of Custom, Partner, or Internet in step 3. In the Add Receive Connector Binding dialog box, select one of the following options:

1. Use all IP addresses available on this server   If you select this option, the connector listens for connections on all the IP addresses that are assigned to the network adapters on the local server.
   
   
2. Specify an IP address   If you select this option, you must type an IP address that is assigned to a network adapter on the local server. The connector listens for connections only on the IP address that you provide.
   
   

   Note:
   You must specify a local IP address that is valid for the Hub Transport server or Edge Transport server on which the Receive connector is located. If you specify an invalid local IP address, the Microsoft Exchange Transport service may fail to start when the service is restarted.

3. On the Local network settings page, in the Port field, type a port number, and then click OK.
   
   To add multiple local IP addresses to this connector, click Add and repeat this step.
   
   To modify a previous entry, select the entry, and then click Edit.
   
   To remove an existing entry, select the entry, and then click .
   
   

On the Local network settings page, in the Specify the FQDN this connector will provide in response to HELO or EHLO field, type the name that is advertised in response to the SMTP HELO or EHLO verb. If you leave this field blank, the fully qualified domain name (FQDN) of the Hub Transport server or Edge Transport server is automatically added when the connector is created. Click Next.

On the Remote network settings page, enter the IP address or IP address range of the remote servers from which the connector will accept incoming connections. The Remote network settings page appears only if you selected a usage type of Custom, Partner, Internal or Client in step 3. To add the remote IP address or remote IP address range, use one of the following methods:

• To enter an IP address or subnet without a subnet mask, or to specify the subnet mask by using Classless Interdomain Routing (CIDR) notation, click Add or the drop-down arrow located next to Add and select IP Address. In the Add IP address(es) of Remote Servers dialog box, enter the IP address by using one of the following methods:
  
  IP address without a subnet mask   For example, 192.168.1.0. If you don't specify a subnet mask by using CIDR notation, the classful default subnet mask is assumed.
  
  IP address by using CIDR notation   For example, 192.168.1.0/24
  
  
• To enter an IP address or subnet together with a subnet mask in dotted decimal notation, click the drop-down arrow located next to Add and select IP and Mask. In the Add Remote Servers - IP and Mask dialog box, enter the IP address and the subnet mask by using the following syntax:
  
  IP Address   For example, 192.168.1.0
  
  Subnet Mask   For example, 255.255.255.0
  
  
• To specify an IP address range by using the first IP address and the last IP address in the range, click the drop-down arrow located next to Add and select IP Range. In the Add Remote Servers - IP Range dialog box, enter the IP address and the subnet mask by using the following syntax:
  
  Start Address   For example, 192.168.1.1
  
  End Address   For example, 192.168.255.255
  
  Because you can't specify a subnet mask, the classful default subnet mask is assumed.
  
  

When you are finished, click OK.

To add multiple remote network ranges to this connector, click Add and repeat this step.

To modify a previous entry, select the entry, and then click Edit.

To remove an existing entry, select the entry, and then click .

When you are finished, click Next.

On the New Connector page, review the configuration summary for the connector. If you want to modify the settings, click Back. To create the Receive connector by using the settings in the configuration summary, click New.

On the Completion page, click Finish.