Data upload with implicit FTP

You can configure the RLU to use implicit FTP to upload email recipient lists. Implicit FTP uses port 990 to establish a connection to HCL Unica hosted services.

When you enable the RLU for implicit FTP, the entire session is encrypted from the start. Implicit FTP is unlike connection through explicit FTP, where the RLU explicitly requests a secure link.

To use implicit FTP to upload recipient lists, you must reveal and configure a system configuration property in the Deliver configuration properties.

The following diagram illustrates how the RLU uploads recipient data to HCL Unica hosted services when the system is configured to use implicit FTP.

The following table describes the connection sequence.

Step Action Description
1

Initial client FTP connection request

From behind the corporate firewall, the RLU initiates a data upload session by using FTP over SSL. The RLU sends the SSL connection request to the address for HCL Unica hosted services. You must configure this address in advance.

To start the session, the RLU opens port 990. HCL Unica hosted services accept encrypted FTP command connections only on port 990.

2

Remote FTP server response

If HCL Unica hosted services recognize the request as a valid implicit FTP request, the FTP server accepts the connection request. It designates the FTP data port to use for the recipient list upload.

See Connection and port requirements for the range of data ports the FTP server can specify.

3

Recipient List upload

The RLU commences the list upload on the specified data port. When the upload finishes, the RLU drops the FTP connection.