Hello, I am still struggling with this. I have used wireshark to trace the session when uploading a file. In the trace it works fine for a while and then I get TCP DUP ack failures. Eventually the upload times out.
When transferring from the xp machine on the same network, its all green, no issues, no failures as above. I have disabled autotuning of the connection in Windows 7 as per this page. http://8help.osu.edu/3253.html I have also played around with the mtu size, however , no joy. Does anyone know anything else I might be able to try? Thanks, Ryan On Fri, Dec 11, 2009 at 11:20 AM, <lst_ho...@kwsoft.de> wrote: > Zitat von Ryan Beatty <ryan.bea...@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 > > > -- > IMP mailing list - Join the hunt: http://horde.org/bounties/#imp > Frequently Asked Questions: http://horde.org/faq/ > To unsubscribe, mail: imp-unsubscr...@lists.horde.org > > -- IMP mailing list - Join the hunt: http://horde.org/bounties/#imp Frequently Asked Questions: http://horde.org/faq/ To unsubscribe, mail: imp-unsubscr...@lists.horde.org
