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426 Data connection: No such file or directory.
stev-e -
Hi at all,

on a Synology NAS there is a SmbFTPD server used (v2.7). I am accessing it via RClone FTP backend (explicit TLS). Unfortunately for some files (those that are of a few Mb in size in contrast to few Kb for the successful transferred files) the upload fails. Seems the connection gets interrupted? In the changelogs for SmbFTPD I cannot find a hint that there was an issue fixing a problem like this. This is the complete RClone log. Can you help?

023/03/03 16:59:15 DEBUG : ftp://192.168.2.102:21/dms_backup: Connecting to FTP server
2023/03/03 16:59:15 DEBUG : ftp://192.168.2.102:21/dms_backup: dial("tcp","192.168.2.102:21")
2023/03/03 16:59:15 DEBUG : ftp://192.168.2.102:21/dms_backup: > dial: conn=*fshttp.timeoutConn, err=<nil>
2023/03/03 16:59:15 DEBUG : FTP Rx: "220 nas3 FTP server ready."
2023/03/03 16:59:15 DEBUG : FTP Tx: "AUTH TLS"
2023/03/03 16:59:15 DEBUG : FTP Rx: "234 AUTH TLS command successful."
2023/03/03 16:59:15 DEBUG : FTP Tx: "USER <USERID>"
2023/03/03 16:59:15 DEBUG : FTP Rx: "331 Password required for <USERID>."
2023/03/03 16:59:15 DEBUG : FTP Tx: PASS *****
2023/03/03 16:59:15 DEBUG : FTP Rx: "230 User <USERID> logged in."
2023/03/03 16:59:15 DEBUG : FTP Tx: "FEAT"
2023/03/03 16:59:15 DEBUG : FTP Rx: "211- Extensions supported:"
2023/03/03 16:59:15 DEBUG : FTP Rx: " AUTH TLS"
2023/03/03 16:59:15 DEBUG : FTP Rx: " PBSZ"
2023/03/03 16:59:15 DEBUG : FTP Rx: " PROT"
2023/03/03 16:59:15 DEBUG : FTP Rx: " CCC"
2023/03/03 16:59:15 DEBUG : FTP Rx: " SIZE"
2023/03/03 16:59:15 DEBUG : FTP Rx: " MDTM"
2023/03/03 16:59:15 DEBUG : FTP Rx: " REST STREAM"
2023/03/03 16:59:15 DEBUG : FTP Rx: " MFMT"
2023/03/03 16:59:15 DEBUG : FTP Rx: " TVFS"
2023/03/03 16:59:15 DEBUG : FTP Rx: " MLST modify*;type*;unique*;size*;UNIX.mode*;UNIX.owner*;UNIX.group*;"
2023/03/03 16:59:15 DEBUG : FTP Rx: " MLSD modify*;type*;unique*;size*;UNIX.mode*;UNIX.owner*;UNIX.group*;"
2023/03/03 16:59:15 DEBUG : FTP Rx: " UTF8"
2023/03/03 16:59:15 DEBUG : FTP Rx: "211 End."
2023/03/03 16:59:15 DEBUG : FTP Tx: "TYPE I"
2023/03/03 16:59:15 DEBUG : FTP Rx: "200 Type set to I."
2023/03/03 16:59:15 DEBUG : FTP Tx: "OPTS UTF8 ON"
2023/03/03 16:59:15 DEBUG : FTP Rx: "200 OK, UTF-8 enabled"
2023/03/03 16:59:15 DEBUG : FTP Tx: "PBSZ 0"
2023/03/03 16:59:15 DEBUG : FTP Rx: "200 PBSZ command successful (PBSZ=0)."
2023/03/03 16:59:15 DEBUG : FTP Tx: "PROT P"
2023/03/03 16:59:15 DEBUG : FTP Rx: "200 Protection level set to Private."
2023/03/03 16:59:15 DEBUG : FTP Tx: "MLST dms_backup"
2023/03/03 16:59:15 DEBUG : FTP Rx: "250- Start of list for dms_backup"
2023/03/03 16:59:15 DEBUG : FTP Rx: " modify=20230303155828;type=dir;unique=31U100;size=226;UNIX.mode=0777;UNIX.owner=root;UNIX.group=root; /dms_backup"
2023/03/03 16:59:15 DEBUG : FTP Rx: "250 End of list"
2023/03/03 16:59:15 DEBUG : FTP Tx: "MLST dms_backup/export20230228backup3.zip"
2023/03/03 16:59:15 DEBUG : FTP Rx: "550 dms_backup/export20230228backup3.zip can't be listed"
2023/03/03 16:59:15 DEBUG : export20230228backup3.zip: Need to transfer - File not found at Destination
2023/03/03 16:59:15 DEBUG : FTP Tx: "MLST dms_backup"
2023/03/03 16:59:15 DEBUG : FTP Rx: "250- Start of list for dms_backup"
2023/03/03 16:59:15 DEBUG : FTP Rx: " modify=20230303155828;type=dir;unique=31U100;size=226;UNIX.mode=0777;UNIX.owner=root;UNIX.group=root; /dms_backup"
2023/03/03 16:59:15 DEBUG : FTP Rx: "250 End of list"
2023/03/03 16:59:15 DEBUG : FTP Tx: "EPSV"
2023/03/03 16:59:15 DEBUG : FTP Rx: "229 Entering Extended Passive Mode (|||55838|)"
2023/03/03 16:59:15 DEBUG : ftp://192.168.2.102:21/dms_backup: dial("tcp","192.168.2.102:55838")
2023/03/03 16:59:15 DEBUG : ftp://192.168.2.102:21/dms_backup: > dial: conn=*tls.Conn, err=<nil>
2023/03/03 16:59:15 DEBUG : FTP Tx: "STOR dms_backup/export20230228backup3.zip"
2023/03/03 16:59:15 DEBUG : FTP Rx: "150 Opening BINARY mode SSL data connection for 'dms_backup/export20230228backup3.zip'."
2023/03/03 16:59:15 DEBUG : FTP Rx: "426 Data connection: No such file or directory."
2023/03/03 16:59:15 DEBUG : FTP Tx: "QUIT"

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