[Dovecot] Very long establishment time for secondary connections

[Timo Sirainen]

On Aug 14, 2009, at 8:53 AM, Jeff Mitchell wrote:

> My best guess, after looking at dovecot messages in syslog related to
> her login, is that Thunderbird is using a secondary imap process to do
> this copying and this connection times out due to inactivity, so that
> when she sends mail it has to reestablish itself. For some reason this
> reestablishment seems to take a very long time, even though her
> initial login/connection when she opens Thunderbird is very fast.

My guess: Some router/NAT in the middle drops this connection and then  
when TB tries to send the message the packets get just dropped,  
instead of being rejected.