Our Public FTP test site info is below and can be used to upload test DLP files. The files will only be stored for 5 minutes before being deleted.
FTP URL: ftp.dlptest.com or ftp://ftp.dlptest.com/
FTP User: email@example.com
UCONN FTP Test
Another option is UCONN University which has a public FTP Site for testing as well. There is a folder on ftp.uconn.edu called 48_hour which stores file for 48 hours and is good for uploading test files.
FTP Hostname: ftp.uconn.edu or ftp://ftp.uconn.edu/