Technical information concerning the bpost FTPS connection.

Making an FTPS connection is similar to making an FTP connection, but it includes an additional security encryption method ‘TLS/SSL Explicit encryption’ to be chosen at the time of creating the connection.

bpost FTPS host name: filetransfer.bpost.be

Don't forget to cross check that the below configuration is available on your firewall/proxy

Allow connections to port 21 for TLS/SSL

Allow traffic to passive port range 30000-40000 for TLS/SSL

The document attached below, gives a step-by-step guide to make an FTPS connection using FileZilla or WinSCP (file transfer clients).