I don't know if the problem is with FreeFileSync or not. I'm looking for advice and suggestions.

Although we see a space limitation, there is no space limits on the account. We have been able to copy more data over than the space limit.

Y:\VolumeImages <->

sftp://ccc-onsite-img.ddns.net/ACCT

[7:30:04 PM] Warning: Not enough free disk space available in:

sftp://ccc-onsite-img.ddns.net/ACCT

Required: 375 GB

Available: 41.2 MB

[7:30:04 PM] Info: Synchronizing folder pair:

Y:\VolumeImages

sftp://ccc-onsite-img.ddns.net/ACCT

[7:30:04 PM] Info: Deleting file "sftp://ccc-onsite-img.ddns.net/ACCT/Akee/C_VOL-b002-i1474-cd-cw.spi.ffs_tmp"

[7:30:04 PM] Info: Creating file "sftp://ccc-onsite-img.ddns.net/ACCT/Akee/C_VOL-b002-i1474-cd-cw.spi"

[8:13:02 PM] Info: Creating file "sftp://ccc-onsite-img.ddns.net/ACCT/Akee/C_VOL-b002-i1596-cd-cm.md5"

[8:13:02 PM] Info: Creating file "sftp://ccc-onsite-img.ddns.net/ACCT/Akee/C_VOL-b002-i1596-cd-cm.spi"

[8:21:13 PM] Error: Cannot write file "sftp://ccc-onsite-img.ddns.net/ACCT/Akee/C_VOL-b002-i1596-cd-cm.spi.ffs_tmp".

Error Code LIBSSH2_ERROR_OUT_OF_BOUNDARY: channel read (libssh2_sftp_write)

[8:21:13 PM] Info: Creating file "sftp://ccc-onsite-img.ddns.net/ACCT/Akee/C_VOL-b002-i1596-cd-cm.spi.bitmap"

[8:21:13 PM] Error: Cannot write file "sftp://ccc-onsite-img.ddns.net/ACCT/Akee/C_VOL-b002-i1596-cd-cm.spi.bitmap.ffs_tmp".

Error Code LIBSSH2_ERROR_OUT_OF_BOUNDARY: Unable to send FXP_OPEN* (libssh2_sftp_open)

[8:21:13 PM] Info: Creating file "sftp://ccc-onsite-img.ddns.net/ACCT/Akee/C_VOL-b002-i1596-cd.md5"

[8:21:13 PM] Error: Cannot write file "sftp://ccc-onsite-img.ddns.net/ACCT/Akee/C_VOL-b002-i1596-cd.md5.ffs_tmp".

Error Code LIBSSH2_ERROR_OUT_OF_BOUNDARY: Unable to send FXP_OPEN* (libssh2_sftp_open)

No other files got copied over. They all error out.

I am also working with the hardware vendor who implemented a basic Linux FTP server.