Can't open data connection for transfer of import.txt

Overview

When using FTP in your DataBridge Profile you might see this error when testing the connection.

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When you are testing in FileZilla for instance you could well see that the connection works. So what is going on?

It is related to this: https://stackoverflow.com/questions/65636482/can-connect-to-ftp-using-filezilla-or-winscp-but-not-with-ftpwebrequest-or-flue

How to

For now the solution is to change the setting "TLS/SSL Session reuse” and turn it Off
This is a feature that makes the transfer over an SSL secured FTP connection more secure. However, it is not supported in .NET Framework (and we use that for DataBridge).

In addition to this setting we have also seen that customers should change the connection type to Passive in the Profile in DataBridge

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