In your previous post you said that when the destination path was "TEST.txt" the transfer was successful, but when you changed the path to "/sftp/test/TEST.txt" it failed. Given the destination system is Windows, I wonder if the ssh server on your Windows system doesn't accept "/" as a directory separator. Maybe it would work if you specified the path as "\\sftp\\test\\TEST.txt", and maybe you should specify the drive: "C:\\sftp\\test\\TEST.txt".

You might try running process monitor on the destination system to see what the ssh server is doing when the file transfer is attempted. I guess you will see it attempt to access some file or folder with a permission error. Maybe you will see that it is not the folder you think it is (e.g. on a different drive).

First of all THX again for your help.
The path to the remote directory is /HOME
This is not a problem of a remote server.
If I change this script like below, then the file will be sent without problems, but it will be renamed from TEST.txt to NEW.txt.
I must send a file with original name.
How to change this script now?

#!/usr/bin/perl -w

use strict;
use warnings;

use File::Copy;
use File::Find;
use Net::Netrc;
use Net::SFTP;
use MIME::Lite;
use Getopt::Std;
use Mail::Sender;


my $from       = '/srv/*.txt';
my $to         = '/HOME/NEW.txt';
my $server     = 'X.X.X.X';
my $user       = 'user';
my $sftp;
my %args       = ( ssh_args => { user            => 'user',

                                 identity_files  => [ '/home/.ssh/id_r
+sa' ],

                                 protocol        => '2,1',

                                 debug           => 1,

                               }

);

my $linux = "admin\@domain.net";
my $recipient1 = "recipient1\@domain.net";
my $recipient2 = "recipient2\@domain.net";
my $recipient3 = "recipient3\@domain.net>";


# write a log
BEGIN
{
use CGI::Carp qw(carpout);
my $errorlog = "/srv/logs/transferlog.txt";
open(LOG, ">$errorlog") or die("Unable to open $errorlog: $!\n");
print LOG "Errors:\n";
carpout(*LOG);
}

# create backup subfolder
my @dt = localtime;
my $subfolder_name = ((((1900 + $dt[5]) * 100 + 1 + $dt[4]) * 100 + $d
+t[3]) * 100 + $dt[2]) * 100 + $dt[1];
mkdir "/srv/OUT/$subfolder_name" or die "$subfolder_name: $!";


foreach my $from (</srv/*.txt>) {


# sftp file transfer
$sftp = Net::SFTP->new($server, %args) or die "could not open connecti
+on to $server\n";

$sftp->put($from, $to) or die "could not upload $from\n";


# move files to the backup directory
unless(move("$from", "/srv/OUT/$subfolder_name"))

{
               print STDERR "Oops!  Couldn't move the file: $!";
}

move "/srv/logs/transferlog.txt", "/srv/OUT/$subfolder_name";

               sleep (1 * 5)
}


# send a mail if transfer completed
my $sender = new Mail::Sender
  {smtp => 'localhost', from => $linux};
  $sender->MailFile({to => "$recipient1, $recipient2, $recipient3",
  subject => 'data transfer',
  msg => 'data transfer should be completed',
  file => "/srv/OUT/$subfolder_name/transferlog.txt"});

exit;
[download]


greetings
cc