Hello Alan,
Welcome to the forum.
Generally, this would point to the server using the same port
on its side. The reference to passive mode is an option, not a
necessity this allows the server to accept the new job (your ftp)
when the port is free.
Assuming you have used this feature successfully in the past,
I would check to see if any changes have been made on the server
side; updated firewall, patches applied, new jobs running etc.
For passive mode, you would have to check your ftp settings.
Can't check that here, so if any one can advise, please jump in.
Hope this helps, at least a bit
,
Brian