[ZendTo] ZendTo Digest, Vol 98, Issue 21

[Jules Field]

On 22/11/2018 16:26, Bertrand, Guy via ZendTo wrote:
> Hi,
>
> Just to add a quick note in regards to Marcos' issue with drop-offs and the error message
>
> "Sorry, I failed to drop-off your files!
> Note that you cannot drop-off directories, only files"
>
> I have seen this twice in the past 2 weeks.  I can confirm that both times, the users were NOT trying to drop-off a directory.  Only files.  I currently have a fresh install of ZendTo 5.11-3 on Centos 7.
>
> For my first user with this issue, he was at a remote site, using a VPN back into our corporate network, then using our internal IP address for our Zendto server.  I asked him to disconnect from the VPN, and connect directly to the internet side of our server.  Worked perfectly.
Might your VPN service be doing application-level checks (e.g. malware 
scans) on files sent via HTTP? (There are plenty of corporate VPN 
services that do a MITM attack to be able to scan HTTPS traffic without 
the user realising).
In that case, it's highly likely the file was too large for the scanner 
in the middle to cope with.

>
> For my second user with this issue, he was using IE11, trying to upload 3 files for a total of 10Gb.  I asked him only to upload one file at a time.  It started to work.
Any upload over 2GB is asking an awful lot of IE11. Over 4GB, definitely 
asking for trouble.
There are compatility settings in IE11 that are used by many corporate 
sites in order for their ancient in-house web apps to work. (Otherwise 
why is anyone still trying to use IE?). These compatilibity settings can 
and do make IE break in circumstances like large uploads, where a 
"vanilla" installation behaves fine.

>
> I see nothing exciting in the log files, and I have no information that I can use to continue troubleshooting this.
>
> Any suggestions??
>
> Regards,
>
> Guy
>
> Guy Bertrand, M.Ing
> Directeur informatique / IT Manager
> EXELA TECHNOLOGIES
> b: +1.514.392.4999
> 400, boul. De Maisonneuve Ouest, bureau 1120 | Montréal (Québec),  CANADA H3A 1L4
> www.ExelaTech.com | EXELA LinkedIn
>
>
>
> Message: 3
> Date: Thu, 22 Nov 2018 15:42:06 +0000
> From: Marcos Parrell Sol? <marcos.parrell at deiser.com>
> To: "zendto at zend.to" <zendto at zend.to>
> Subject: [ZendTo] Drop-off issues
> Message-ID:
> 	<WM!0edde081454724406fd1e9be79eafcd80d76f09f3e4d631708bda411bdca1fada7c1b582bd51cdc5dd910f075d5e781a!@mx.jul.es>
> 	
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hello and sorry if this issue has been addressed before,
>
> We have installed ZendTo from scratch over a new installation of CentOS 7 minimal and using the ZendTo installer, everything goes fine but we are experiencing issues when dropping-off the files, does not matter whatever you try to send, we always receive the same failure message and the logs does not through any error:
>
> Sorry, I failed to drop-off your files!
> Note that you cannot drop-off directories, only files
>
> The error appears when the drop-off progress bar reach the 100% but I have note that no file is placed on incoming folder during the upload... and ff course, we are not sending folders.
>
> I have seen someone reporting on last march the same issue ( http://jul.es/pipermail/zendto/2018-March/003156.html ) but he receive not answer, do you noticed this issue before?, is there anything I can check?
>
> I keep investigating but any clue will be appreciated!.
>
> Best regards and many thanks in advance, Marcos.
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Jules

-- 
Julian Field MEng CEng CITP MBCS MIEEE MACM

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