FTP transfer stops unexpectedly

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pasch@...
Guest

FTP transfer stops unexpectedly

Hi,
We have a script, that transfers data overnight in to the FTP server. On the FTP server side there are no indications for any issue. But on our side after many transferred files we suddenly get the following error, when WinSCP wants to connect FTP server. Part of log shows last occurrence of successful transfer and error 451 Internal error.
. 2022-08-04 03:10:00.784 Transfer done: 'C:\SharePoint\Prodejny\Logo\310 elpodpis_2021_kbblok.jpg' => '/Logo/310 elpodpis_2021_kbblok.jpg' [15961]
. 2022-08-04 03:10:00.784 File: 'C:\SharePoint\Prodejny\Logo\311 elpodpis_2021_kbblok.jpg' [2022-08-04T01:09:02.002Z] [15961]
. 2022-08-04 03:10:00.784 Copying "C:\SharePoint\Prodejny\Logo\311 elpodpis_2021_kbblok.jpg" to remote directory started.
. 2022-08-04 03:10:00.784 Binary transfer mode selected.
. 2022-08-04 03:10:00.784 Starting upload of C:\SharePoint\Prodejny\Logo\311 elpodpis_2021_kbblok.jpg
> 2022-08-04 03:10:00.784 TYPE I
< 2022-08-04 03:10:00.784 200 Type set to I.
> 2022-08-04 03:10:00.784 PASV
< 2022-08-04 03:10:00.784 227 Entering Passive Mode (XXXXXXXXXXXXXXXXXX)
> 2022-08-04 03:10:00.784 STOR 311 elpodpis_2021_kbblok.jpg
. 2022-08-04 03:10:00.784 Connecting to XXXXXXXXXXX:10825 ...
< 2022-08-04 03:10:00.800 150 Data connection accepted from XXXXXXXXXXX:11594; transfer starting for /Logo/311 elpodpis_2021_kbblok.jpg
< 2022-08-04 03:10:00.816 226-Disk Quota - Current : 16.798 GBytes - Max : 24.414 GBytes - Available : 7.616 GBytes
< 2022-08-04 03:10:00.816 226 File received ok.
> 2022-08-04 03:10:00.816 MFMT 20220804010902 311 elpodpis_2021_kbblok.jpg
< 2022-08-04 03:10:00.816 213 Modify=20220804010902; 311 elpodpis_2021_kbblok.jpg
. 2022-08-04 03:10:00.816 Upload successful
. 2022-08-04 03:10:00.816 Transfer done: 'C:\SharePoint\Prodejny\Logo\311 elpodpis_2021_kbblok.jpg' => '/Logo/311 elpodpis_2021_kbblok.jpg' [15961]
. 2022-08-04 03:10:00.816 File: 'C:\SharePoint\Prodejny\Logo\312 elpodpis_2021_cikom.jpg' [2022-08-04T01:09:02.705Z] [15034]
. 2022-08-04 03:10:00.816 Copying "C:\SharePoint\Prodejny\Logo\312 elpodpis_2021_cikom.jpg" to remote directory started.
. 2022-08-04 03:10:00.816 Binary transfer mode selected.
. 2022-08-04 03:10:00.816 Starting upload of C:\SharePoint\Prodejny\Logo\312 elpodpis_2021_cikom.jpg
> 2022-08-04 03:10:00.816 TYPE I
< 2022-08-04 03:10:00.816 200 Type set to I.
> 2022-08-04 03:10:00.816 PASV
< 2022-08-04 03:10:00.816 227 Entering Passive Mode (XXXXXXXXXXXXXXXXXX)
> 2022-08-04 03:10:00.816 STOR 312 elpodpis_2021_cikom.jpg
. 2022-08-04 03:10:00.816 Connecting to XXXXXXXXXXX:11980 ...
< 2022-08-04 03:10:00.831 451 Internal error.
. 2022-08-04 03:10:00.831 Copying files to remote side failed.
* 2022-08-04 03:10:00.847 (ExtException) **Copying files to remote side failed.**
* 2022-08-04 03:10:00.847 Internal error.
. 2022-08-04 03:10:00.847 Asking user:
. 2022-08-04 03:10:00.847 Error transferring file 'C:\SharePoint\Prodejny\Logo\312 elpodpis_2021_cikom.jpg'. ("Copying files to remote side failed.","Internal error.")
< 2022-08-04 03:10:00.847 Script: Error transferring file 'C:\SharePoint\Prodejny\Logo\312 elpodpis_2021_cikom.jpg'.
< 2022-08-04 03:10:00.847 Script: Copying files to remote side failed.
< 2022-08-04 03:10:00.847 Internal error.
* 2022-08-04 03:10:00.909 (ESkipFile) Error transferring file 'C:\SharePoint\Prodejny\Logo\312 elpodpis_2021_cikom.jpg'.
* 2022-08-04 03:10:00.909 Copying files to remote side failed.
* 2022-08-04 03:10:00.909 Internal error.
. 2022-08-04 03:10:00.909 Copying finished: Transferred: 151 856 312, Elapsed: 0:00:42, CPS: 3 385 481/s
. 2022-08-04 03:10:00.909 Script: Failed
. 2022-08-04 03:10:00.909 Script: Exit code: 1
. 2022-08-04 03:10:00.909 Disconnected from server
Where could be the issue?

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martin
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Re: FTP transfer stops unexpectedly

The error comes from the server. We cannot know what kind of internal error did the server suffer.
My wild guess would be that the server is overloaded somehow. Try decreasing transfer speed to relieve the server.

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