dovecot - Oct 2022 - ot: how to t/s TBird problems ?

> I recently upgraded my Thunderbird email client and have experienced
> problems since.
> It appears that when Tbird polls for new messages it gets held up
> waiting for a response from the server
> I'm using POP port 995.
> Any ideas as to why I'm having a problem ?
> -------------------
>
> how to investigate such issue ?
I suspect you'll need to do session logging e.g.

        protocol pop3 {
                ...
                rawlog_dir = /writable/logdir/%u
        }

then

        mkdir /writable/logdir/user
        chmod 0777 /writable/logdir/user

to obtain session transcripts of what server/client are doing.

I don't see any obvious errors from the logs that indicate any failure.
I do see the INBOX is rather large so maybe a timeout is involved.

Joseph Tam <jtam.home at gmail.com>

thank you for all replies.

On Thu, October 13, 2022 9:22 am, Joseph Tam wrote:
> to obtain session transcripts of what server/client are doing.
>
> I don't see any obvious errors from the logs that indicate any failure.
> I do see the INBOX is rather large so maybe a timeout is involved.
Joseph, yes, it has around 114437 emails

# ls  |wc
 114437  114437 6800828

I've enabled logging as per your suggestion:

-rw------- 1 vmail vmail     127 Oct 16 21:38 20221016-213738.25640.1.in
-rw------- 1 vmail vmail 8546603 Oct 16 21:38 20221016-213738.25640.1.out
-rw------- 1 vmail vmail      96 Oct 16 21:58 20221016-215757.26075.1.in
-rw------- 1 vmail vmail 8343463 Oct 16 21:58 20221016-215757.26075.1.out


# cat 20221016-213738.25640.1.in
1665916659.491025 STAT
1665916659.550829 LIST
1665916676.430794 UIDL
1665916693.761281 RETR 114437
1665916694.440965 QUIT
# cat 20221016-215757.26075.1.in
1665917878.786953 STAT
1665917878.863136 LIST
1665917905.610805 UIDL
1665917924.491198 QUIT
#

what should I look in the .out file ?

some of the file is like:

....
1665916661.234807 114436 70097
1665916661.234814 114437 154498
1665916661.234821 .
1665916676.430870 +OK
1665916676.981415 1 000024b95283283a
1665916676.981459 2 000024ba5283283a
....

1665916679.434297 114436 00033fcf5283283a
1665916679.434327 114437 00033fd05283283a
1665916679.434349 .
1665916694.048139 +OK 154498 octets
1665916694.048199 Return-Path: <buyer-notice14.g at mail.aliexpress.com>
....

on an uneducated guess, the mailbox is just 'too large' ?
POP has difficulty handling so many files ?

On Thu, October 13, 2022 5:44 am, Brendan Braybrook
wrote:
> maybe send the protocol debug out of thunderbird to the list too?
(that'd
> show exactly what pop3 command thunderbird was hanging on).
Brendan,

thanks, I'll try the server logging first, as I can do it myself

On Thu, October 13, 2022 10:23 am, Jim Popovitch wrote:
> On Fri, 1665532449-12-31 at 00:00 +0000, Voytek Eymont wrote:
>> Date: 1665532450
> Why is your "Date:" header set to 1665532450?
Jim,

I think it's an issue with SquirrelMail, I think I've seen it before,
sometimes...?


Voytek