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

Anahuac anahuac at anahuac.eu
Tue Jun 29 19:51:22 CEST 2021


Thanks Ananias, 

We could debug an IMAP account connection and share it here right? 
Lets past it in pastbin and share the link here. 

> De: "Ananias Filho" <kram3r at gmail.com>
> Para: "anahuac" <anahuac at anahuac.eu>
> Cc: "users" <users at lists.zetalliance.org>
> Enviadas: Terça-feira, 29 de junho de 2021 14:47:08
> Assunto: Re: [Users] Next Zeta Alliance call agenda ready for your input

> 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 < [ mailto:anahuac at anahuac.eu |
> 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" < [ mailto:anahuac at anahuac.eu | anahuac at anahuac.eu ] >
>>> Para: "users" < [ mailto:users at lists.zetalliance.org |
>>> 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: u nfortunately 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" < [ mailto:randy at skywaynetworks.com |
>>>> randy at skywaynetworks.com ] >
>>>> Para: "users" < [ mailto:users at lists.zetalliance.org |
>>>> 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 ( [ mailto:randy at skywaynetworks.com | randy at skywaynetworks.com ] )
>>>> Skyway Networks, LLC

>>>> From: "Anahuac" < [ mailto:anahuac at anahuac.eu | anahuac at anahuac.eu ] >
>>>> To: "users" < [ mailto:users at lists.zetalliance.org | 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" < [ mailto:randy at skywaynetworks.com |
>>>>> randy at skywaynetworks.com ] >
>>>>> Para: "users" < [ mailto:users at lists.zetalliance.org |
>>>>> 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 |
>>>>> 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 |
>>>>> https://www.freeconferencecall.com/wall/zetalliance ]

>>>>> Randy Leiker ( [ mailto:randy at skywaynetworks.com | randy at skywaynetworks.com ] )
>>>>> Skyway Networks, LLC

>>>>> From: "Anahuac" < [ mailto:anahuac at anahuac.eu | anahuac at anahuac.eu ] >
>>>>> To: "users" < [ mailto:users at lists.zetalliance.org | 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 |
>>>>> 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" < [ mailto:info at barrydegraaff.nl | info at barrydegraaff.nl ]
>>>>> > >
>>>>>> Para: "users" < [ mailto:users at lists.zetalliance.org |
>>>>> > 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 |
>>>>> > 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/ |
>>>>> > 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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