All DNS entries for the old FTP servers (ftp, ftp0, ftp2, ftp3, ftp4, ftp5) all point to ftp1.accessdata.com, but any of them will work.  The new server requires security.
 

For those using Filezilla: 

If you use the direct entry it should look like this:
 

 
If using site manager, it should look like this:
 
 
For the web portal interface (https://ftp.accessdata.com), there are some new additional features.