[Users] Next Zeta Alliance call agenda ready for your input

Tue Jun 29 19:47:08 CEST 2021

Hello All, Greats to join on group.
Just to clarify some questions, i will show bellow one of the environments
with this IMAP problem/issue:
1 - Network issue
R. Its not a Network issue since we have test it on 2 scenarios.
A - Proxmox Cluster (Differents nodes) - Zimbra on node 1 and Windows on
node 2 (nodes connected under 1Gbits network)
B - Proxmox Cluster - Zimbra and Windows on same node.

2 - Windows and Outlook versions:
R. We have tested with differents windows and outlook versions.
Windows 7, 8, 8.1, 10 - pt_BR and en_US
Outlook 2010, 2013, 2016 and 2019 pt_BR only

Also, Zimbra environment:
Type: Linux LXC Container
Ubuntu 18.04 LTS
Zimbra 8.8.15_P19
CPU: 10 vCPU
Mem: 32 GB
Host disks are SSD and NVMe

Let me know if i can help with more details or tests.
Tks!
*Ananias Filho - kram3r*

On Tue, Jun 29, 2021 at 2:31 PM Anahuac <anahuac at anahuac.eu> wrote:

>
> Guys,
>
> First of all thank you very much for having me in the conference. It was
> really awesome =)
>
> So, I asked to Ananias and old friend and one of the very best Zimbra
> admins I know to join the group and give you some inputs as well.
> Just now when I told him about your impressions over the issue be in the
> network connection he told me he installed a Windows in the very same
> Proxmox cluster Zimbra is running in.
> So it doesn't seems to be network.
>
> Anyway I'll let him describe it a bit.
>
> Welcome Ananias
>
>
>
>
>
> ------------------------------
>
> *De: *"anahuac" <anahuac at anahuac.eu>
> *Para: *"users" <users at lists.zetalliance.org>
> *Enviadas: *Terça-feira, 29 de junho de 2021 8:50:19
> *Assunto: *Re: [Users] Next Zeta Alliance call agenda ready for your input
>
>
> Good morning,
>
> I have made some tests and I shared
> that zimbra_imap_folder_pagination_enabled option in our Telegram Zimbra
> group so other could test it too.
> We all gt the same results: unfortunately it doesn't changed nothing.
> One of my colegues in the group said he felt "some" improvement in
> mailboxes with 10Gb or less, but not much.
>
> FTR we all increased the time between send/receive cycles in Outlook too.
>
> I was so hopeful that could fix the issue but it seems that's not the case.
> Any other suggestions or tests we could perform?
>
>
>
> ------------------------------
>
> *De: *"Randy Leiker" <randy at skywaynetworks.com>
> *Para: *"users" <users at lists.zetalliance.org>
> *Enviadas: *Domingo, 27 de junho de 2021 15:40:26
> *Assunto: *Re: [Users] Next Zeta Alliance call agenda ready for your input
>
> You are welcome and I hope it helps solve the issue.  Those two settings
> seem to help the most when you have mailbox users that have sophisticated
> folder trees (many nested sub-folders).  In those cases, IMAP clients can
> really struggle to complete a sync of all folders before the next
> send/receive cycle starts.  If the next send/receive cycle starts before it
> is finished syncing all of the folders from the prior cycle, IMAP clients
> will usually abort the process & start over again.  This in turn can cause
> it to never finish, leading to problems like new emails not arriving in the
> Inbox or email being stuck in the Outbox.
>
> Another strategy that often helps too is to ask clients to increase the
> time between send/receive cycles in Outlook.  For example, if clients have
> it set to checking mail once per minute, try changing the send/receive
> groups setting in Outlook to checking every 5 or 10 minutes instead.  The
> clients will likely need to quit & restart Outlook after making this change
> so that it goes in to effect.
>
>
> Randy Leiker ( randy at skywaynetworks.com )
> Skyway Networks, LLC
> ------------------------------
> *From: *"Anahuac" <anahuac at anahuac.eu>
> *To: *"users" <users at lists.zetalliance.org>
> *Sent: *Sunday, June 27, 2021 12:33:14 PM
> *Subject: *Re: [Users] Next Zeta Alliance call agenda ready for your input
>
>
> I have to confess that I thought that option was enabled out of the box
> when I did that upgrade.
> It wasn't enabled, so I had done and I'll let you know as son as I
> performe some tests.
>
> Thank you Randy for your fast answer.
>
>
> ------------------------------
>
> *De: *"Randy Leiker" <randy at skywaynetworks.com>
> *Para: *"users" <users at lists.zetalliance.org>
> *Enviadas: *Domingo, 27 de junho de 2021 13:29:27
> *Assunto: *Re: [Users] Next Zeta Alliance call agenda ready for your input
>
> Hi,
>
> Welcome to the Zeta Alliance.  The issue you have described has some
> similarities to a known issue that can occur with IMAP and large mailboxes,
> where an IMAP sync never completes.  This can also affect outbound email
> too, if the inbound email sync never finishes.  Back in 8.8.15 Patch 15,
> two new settings were introduced that may help:
> zimbra_imap_folder_pagination_enabled and
> zimbra_imap_folder_pagination_size (
> https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P15 ).  Have you
> tried enabling these settings to see if they help?
>
> Also, feel free to join the next Zeta Alliance call this coming Tuesday to
> discuss further too: https://www.freeconferencecall.com/wall/zetalliance
>
>
> Randy Leiker ( randy at skywaynetworks.com )
> Skyway Networks, LLC
>
> ------------------------------
> *From: *"Anahuac" <anahuac at anahuac.eu>
> *To: *"users" <users at lists.zetalliance.org>
> *Sent: *Sunday, June 27, 2021 7:31:32 AM
> *Subject: *Re: [Users] Next Zeta Alliance call agenda ready for your input
>
> Hello All,
>
> This is my first message to the list =)
> Nice to meet you.
>
> I'm from Brazil and I have been working with Zimbra OSE for more than 10
> years now. I'm a huge fan.
>
> As you asked I'll like to talk about IMAP issues we have been facing since
> version 8.8.15 when using Oultoook e-mail clients.
> There is some sort of delay when Outlook is used. Let me give you
> specifics:
>
> 1 - Mailboxes never sync, no matter it size. Bigger mailboxes tend to be
> worse.
> No matter what we do: index, redo setup, change Outllok version... it just
> keeps synchronizing forever.
> We can see messages of UID FETCH in mailbox.log but it's like nothing was
> really happening.
> Some accounts can take over a month of tries to be able to have inboxes
> synchronized.
>
> 2 - With all set, a message can take up to 10 minutes to reach Zimbra.
> Crazy stuff: the message sit in outbox for 5 to 10 minutes before it makes
> the first HELO with Zimbra.
>
> 3 - Same with arrival, but it's worse sending.
>
> Extra information related to this:
>
> 1 - If I install and configure Thundrbird in the same computer, using the
> very same account, sync and sending issues just don't happen. "magically"
> it works fast and as expected with Thunderbird but not with Outlook;
>
> 2 - We have this quite big Telegram group oriented to Zimbra in Brazil-
> @zimbrasil - and I was told by friends there that Zimbra 9 NE doesn't
> present that issue. But all Zimbra OSE admins are complaining about it.
> You're welcome to join us and listen to them.
> This has become a serious issue.
>
> 3- I have a topic open about it in Zimbra forum for a quite long time now
> with no comments =(
> https://forums.zimbra.org/viewtopic.php?t=67132
>
> I would really appreciate if you can give us - Zimbra OSE admins - some
> attention on that matter.
>
> Thanks for your attentions and I'm sorry if my message is too long.
> Please don't hesitate to ask me anything.
>
> Regards
>
>
>
> ----- Mensagem original -----
> > De: "Barry de Graaff" <info at barrydegraaff.nl>
> > Para: "users" <users at lists.zetalliance.org>
> > Enviadas: Sábado, 26 de junho de 2021 9:49:00
> > Assunto: [Users] Next Zeta Alliance call agenda ready for your input
>
> > Hello All,
> >
> > Next weeks Zeta Alliance agenda is available at:
> > https://nextcloud.zetalliance.org/index.php/s/kXfMZNCXBPAcCAE
> >
> > Want to add some items? Just email me!
> >
> >
> > In case you have write access go to https://nextcloud.zetalliance.org/ >
> > Meeting Notes > 20210629.md and add them yourself. Don't have an account
> > yet? Email me!
> >
> >
> > Regards, Barry
>
>
>
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