[Dovecot] Slooow imap copy to "Sent" folders

[Bob Miller]

We have a monopoly ISP who gives terrible upload speeds in their
internet packages.  it is pretty easy for most offices to flood the
upload side of the connection, and when that happens we see the symptoms
you describe.  Not sure if that is applicable to you, but that is what I
check when I get these reports...
-- 
Computerisms
Bob Miller      
867-334-7117 / 867-633-3760
http://computerisms.ca


On Thu, 2013-04-18 at 15:21 +0200, Frank Bonnet wrote:
> Hello
> 
> Many users here use the "copy to Sent folder" using the IMAP protocol
> with Dovecot 2.1.15 on a FresBSD 9 server.
> 
> Since few days this operation ( copy to sent folder ) became longer
> than before , it could takes several seconds to complete even the
> message is very short.
> 
> Is there a parameter I could tweak to boost this a bit ?
> may users complain with reason
> 
> thank you
>