multiple IMAP sessions when connecting from one client

[Tom Talpey]

On 8/27/2014 7:31 AM, lst_hoe02 at kwsoft.de wrote:
>
> Zitat von Martin Vegter <martin.vegter at aol.com>:
>
>>> On 08/27/2014 11:22 AM, Steffen Kaiser wrote:
>>> On Wed, 27 Aug 2014, Martin Vegter wrote:
>>>
>>>> This looks like 4 separate sessions are created when I log in from one
>>>> client.
>>>
>>>> Is this normal behavior?
>>>> Can somebody please explain why this is so?
>>>
>>> because Thunderbird wants to access 4 mailboxes simultaneously, e.g. to
>>> check or wait for new messages.
>>
>> That would make sense.
>>
>> But I have 5 mailboxes in total (Inbox, Sent, Draft, Archive, Trash).
>> Although, I suspect Inbox has special status because it is not defined
>> together with the other four in 15-mailboxes.conf
>
> This is a client setting, so you have to ask the Thunderbird developers
> why they open that number of connections. Most of the time it is done to
> not block the UI on longer IMAP operations.

BTW this is configurable in Thunderbird:

   Tools->Account Settings->Server Settings->Advanced->Maximum number of 
server connections to cache

Default is 5 IIRC. I find the Tbird UI is much more responsive if set
to 1, for "normal" IMAP use.