NW 7.40 - FTP_CONNECT not working anylonger

Hi experts,

we did an upgrade to EHP 7 and so to 7.40 NW.

Now the FTP_CONNECTION function module is not anylonger working.

I get the error 04 202, that the use is not accepted.

Does anybody know what it is about?
Is there another configuration required for 7.40, maybe in SM59?

Kind regards