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

Over the last several months we have seen what seems like large delays in email
delivery as well,  we get emails at 11AM that are time stamped at 9:10.  I
thought it was a networking issue, but I can?t be sure.  I wish I knew more
about coding, to look under the hood to examine things further.

Sent from my iPhone
> On Oct 23, 2022, at 7:17 AM, Voytek Eymont <voytek at sbt.net.au>
wrote:
> 
> ?
> 
>> On Sat, October 22, 2022 11:29 am, Joseph Tam wrote:
>> 
>> I haven't seen anyone else replying, but there doesn't seem
anything
>> anomalous with the output.  The session commands-repliesd is is more or
>> less what I expect, although to make sense of this, you'll have to
splice
>> the input and output files together using timestamps to see the
sequential
>> flow of data.
> ...
>> Typically, if some resource limit is hit, one side or the other will
>> create a log or notification.  Your INBOX is large, but not outrageous.
You
>> can test it directly by creating smaller subsets of the INBOX messages
and
>> see if the problem goes away.
> 
> Joseph,
> 
> thank you very much for the follow up!
> you won't believe it, literally minutes before your email I got this
email
> from the 'problem user' (below)
> 
> thank you to all who responded!
> 
> - I guess if TB debug log was enabled (as was suggested)- maybe the issue
> would become apparent from TB debug log ?
> 
> - I guess i should encourage POP users to switch to IMAP anyhow ?
> 
> got this from problem user:
> ---------------
> Mozilla Thunderbird released an update which I just installed.
> 
> Problem solved.
> 
> I guess Tbird had a problem that the new release addressed.
> 
> I'm sorry for the inconvenience.
> 
> I'm mystified why my issue was only with one account. Perhaps it was
> something to do with the size of the database.
> 
> ---------------
> yesterday it was
> ---------------
> I'm still experiencing a 40 second delay to retrieve emails for
> xxx
> 
> I have changed the pop port to 110 for the server but that did not
> work at all.
> 
> I have reinstalled my email client TBird but no change, anyway all the
> other accounts on TBird are working ok but they are MAPI not POP.
> 
> 
> Voytek
>

Hi!

This is very unlikely to be a dovecot issue itself. There is nothing inside
dovecot that would horde your emails for 2 hours before "delivering"
them.

You should 

 - Enable mail_log plugin. This will tell you when mails are delivered, when
deleted etc, see
https://doc.dovecot.org/configuration_manual/plugins/mail_event_logging/
 - Examine your logs
 - Check `doveadm fetch 'date.received date.sent date.saved' mailbox
INBOX '*'` ( this will print you the last email in INBOX, note the
quotes)

Aki
> On 23/10/2022 16:49 EEST Chris Wensink <cwensink at
five-star-plastics.com> wrote:
> 
>  
> Over the last several months we have seen what seems like large delays in
email delivery as well,  we get emails at 11AM that are time stamped at 9:10.  I
thought it was a networking issue, but I can?t be sure.  I wish I knew more
about coding, to look under the hood to examine things further.
> 
> Sent from my iPhone
> 
> > On Oct 23, 2022, at 7:17 AM, Voytek Eymont <voytek at
sbt.net.au> wrote:
> > 
> > ?
> > 
> >> On Sat, October 22, 2022 11:29 am, Joseph Tam wrote:
> >> 
> >> I haven't seen anyone else replying, but there doesn't
seem anything
> >> anomalous with the output.  The session commands-repliesd is is
more or
> >> less what I expect, although to make sense of this, you'll
have to splice
> >> the input and output files together using timestamps to see the
sequential
> >> flow of data.
> > ...
> >> Typically, if some resource limit is hit, one side or the other
will
> >> create a log or notification.  Your INBOX is large, but not
outrageous. You
> >> can test it directly by creating smaller subsets of the INBOX
messages and
> >> see if the problem goes away.
> > 
> > Joseph,
> > 
> > thank you very much for the follow up!
> > you won't believe it, literally minutes before your email I got
this email
> > from the 'problem user' (below)
> > 
> > thank you to all who responded!
> > 
> > - I guess if TB debug log was enabled (as was suggested)- maybe the
issue
> > would become apparent from TB debug log ?
> > 
> > - I guess i should encourage POP users to switch to IMAP anyhow ?
> > 
> > got this from problem user:
> > ---------------
> > Mozilla Thunderbird released an update which I just installed.
> > 
> > Problem solved.
> > 
> > I guess Tbird had a problem that the new release addressed.
> > 
> > I'm sorry for the inconvenience.
> > 
> > I'm mystified why my issue was only with one account. Perhaps it
was
> > something to do with the size of the database.
> > 
> > ---------------
> > yesterday it was
> > ---------------
> > I'm still experiencing a 40 second delay to retrieve emails for
> > xxx
> > 
> > I have changed the pop port to 110 for the server but that did not
> > work at all.
> > 
> > I have reinstalled my email client TBird but no change, anyway all the
> > other accounts on TBird are working ok but they are MAPI not POP.
> > 
> > 
> > Voytek
> >