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Backup4All FTP Problems

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Perry Mowbray:
This has been a major pain  :'( , and I'm only posting here in case someone has bumped into something similar and found a solution.  :tellme: :tellme: I've been in contact with the Backup4All developer, the Hosting provider, the router manufacturer  :( and we seem to be running in ever diminishing circles with most people excusing themselves, understandably, and saying it's not their responsibility.

OK: What's the story:
I've got a paid-up latest version of Backup4All Pro that I'm using, amongst other things, to back up off-site, via FTP, to my Windows hosted site at LunarPages.com.

No problems at all locally. Plenty of FTP problems though. B4A almost seems incapable of overwriting a file, not all the time, but when it fails (99% of the time) it always fails when it's trying to write a file that exists on the FTP server. It'll do an initial backup and FTP it to my site without problems. When I do another backup, it'll successfully FTP the next *.zip but fail with the catalog.

The B4A devs have investigated the log files and catalog and said the failure is caused by:
The problem is that the FTP connection is interrupted during the backup.-B4A Developers
--- End quote ---

I tested B4A using some free FTP space over at 0catch.com and it performed fine without problems, using exactly the same backup job (just changing the destination).

I tried the FTP backup to my site with SyncBackSE and it performed without problems (obviously using the same FTP account: therefore it's definitely not permissions).

So I think I can presume:

* It's not a router issue as SyncBack works on my site, B4A works on 0catch.com and Filezilla works on my site.
* It's not a permissions issue as SyncBack works fine.
* It's not my site, as SyncBack works on my site as does Filezilla
* It's not B4A, as it works on 0catch.com
It can only be the combination of B4A and my site??? Is that possible  :-\

MerleOne:
Just a wild guess : did you change your TCP/IP settings with any kind of "Internet Accelerator" ?  If Yes, try to revert to windows defaults.  Most TCP/IP tuning tools allow that, try for instance a free one : Ashampoo Internet Accelerator 2.

Perry Mowbray:
Thanks MerleOne: but no  :(

My best guess at the moment is some incompatibility between B4A and another programme running here... I'll just have to take some time and find it... tomorrow

mwb1100:
Are you using Passive mode FTP (http://www.backup4all.com/passive-mode.php)?  Passive mode works much better when going through a NAT router.   
 

Shades:
My experience is that the version of Samba on the linux machine can pose problems (I have the exact same problem here in a "mixed" LAN network, only SyncbackSE is able to make backups)  :(  Still, I'm looking for an answer for this one.

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