Paul Kudla already suggested setting fetch intervals and to avoid microsoft clients.
You can debug the issue with tcpdump like this:
# tcpdump -X -s100 -nni lo0 port 143
(replace lo0 for lo, eth0 or the name of your interface)
disable all clients, enable the one you want to debug/see the commands.
me deleting a message and client issuing the command:
14:40:17.386079 127.0.0.1.48376 > 127.0.0.1.143: P 1410:1437(27) ack
177507 win 256
14:40:17.486259 127.0.0.1.143 > 127.0.0.1.48376: P 177507:177624(117)
ack 1437 win 256
Cheers, x9p
On 6/14/23 17:19, Michael Grant wrote:
Yes, I’m the sole person responsible for messing this up. My Linux machine, my server, I installed it, I configured it, perhaps I caused this....
It could be some misbehaving imap client that is causing this, that’s one of the things I’m trying to understand. I don’t see any errors in the mail log which is where dovecot logs to. All the clients are as up to date as possible.
One way forward that I know of is to remove all the imap clients and start over, adding one by one seeing if it starts breaking again. I was hoping first to see if I could figure out what’s gone wrong before doing this.
*From: *dovecot@x9p.org *Sent: *14 June 2023 18:05 *To: *Michael Grant mailto:mgrant@grant.org; dovecot@dovecot.org *Subject: *Re: imap syncing issues
The issue seems to be with the clients (an update maybe?), not the server.
do you have console/root access to dovecot and files?
On 6/14/23 11:17, Michael Grant via dovecot wrote:
I’m having synchronization issues in imap. I am accessing my mail from several different imap clients: K9 on Android, Windows 11 and 10 mail client, and Android Gmail app. Both desktop and laptop, tablet, phone. I know I have more than the usual number of imap connections... Often when I delete a message in one place, it doesn’t get deleted in another. For example, if I delete a message on K9 then open my laptop, it’s still there in W11 Mail. But just now, I deleted some messages on my laptop and swiped down on K9 and the message disappeared on K9. But K9 shows other messages which have been deleted in Windows 11 Mail. I’ve not yet been able to figure out a pattern. It’s annoying me. I have to delete messages in several different places. Messages not coming back, they’re just not being deleted in one place and that delete operation is not syncing to the others. Messages seem to be being marked as read properly across devices. This seems to be an issue with delete only, so far as I’ve noticed. I’ve long been using multiple imap clients, this syncing issue started maybe 6 to 8 months ago. Is there a good way to get debugging info out of dovecot as to what the clients are doing? Or does anyone have any advise which might help resolve this without resorting to me digging into the imap protocol? Michael Grant _______________________________________________ dovecot mailing list --dovecot@dovecot.orgTo unsubscribe send an email todovecot-leave@dovecot.org