[imp] Attachments on Windows 7/Vista

[lst_hoe02 at kwsoft.de]

Zitat von Ryan Beatty <ryan.beatty at gmail.com>:

> Hello,
>
> I was wondering if anyone else had come across issues with Windows 7/Vista
> and uploading attachments when composing an email?
>
> I am able to reproduce the error on a number of Windows 7 machines, using
> Chrome, IE8 and Mozilla.
>
> When uploading the attachment, it just times out after around 5 minutes.
>
> I am however able to attach files from an XP machine, Server 2003, Ubuntu.

This looks like TCP/IP problem and there is nothing Horde/IMP can do  
about it. The latest Microsoft OS are now using "modern" TCP/IP  
features like window-scaling,SACK and MTU-discover by default and  
there are still broken routers/firewalls around which choke on this.
This is the most supektable reason because as you said all browsers  
fail on Vista/7 and work and XP/2003.

You have to use some TCP-dumper to see what is going on.

Regards

Andreas

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