[Dovecot] Disconnected: Too many invalid IMAP commands

[Timo Sirainen]

On Sep 18, 2009, at 11:52 AM, Gabriele wrote:

> No problems with messages under 4MB size (there are huge messages,  
> up to 25MB), but as soon as I try to move messages from 4MB and up,  
> the connection hangs, nothing happens, the application becomes  
> barely responsive, I have quit and re-open it to make it behave  
> properly.

Do you have some kind of a software firewall or antivirus in the  
middle? Those often cause problems.

But like Matthias mentioned, looking at the IMAP traffic would be  
helpful. For example with http://wiki.dovecot.org/Debugging/Rawlog