Request for help - dovecot

[Kishore Potnuru]

Hi All,

Can you please help me in understanding this:

1. At present my RHEL server is 6.10 version. Am I able to install dovecot
2.2 or 2.3 version?
2. Am i able to upgrade directly from 2.0 to 2.3? or I should go
periodically from 2.0 to 2.1, then 2.1 to 2.2, then 2.2 to 2.3....?
3. could you please suggest to me steps to pick the correct package to
upgrade in the above version (2.1, 2.2, 2.3)?
4. From Which location do I need to download the packages?
5. I am using redhat servers. Am i able to directly download and upgrade
the software from my redhat linux server? Please advise step-by-step
instructions for this?

Thanks,
Kishore Potnuru

On Wed, Jul 8, 2020 at 11:38 AM Kishore Potnuru <kishore.reachme at gmail.com>
wrote:

> Thank you for your reply.
>
> 1. Am i able to upgrade directly from 2.0 to 2.3? or I should go
> periodically from 2.0 to 2.1, then 2.1 to 2.2, then 2.2 to 2.3....?
> 2. could you please suggest me steps to pick the correct package to
> upgrade in the above version (2.1, 2.2, 2.3)?
> 3. which location i need to download the packages?
> 4. I am using redhat servers. Am i able to directly download and upgrade
> the software from my redhat linux server? please advise step-by-step
> instructions for this?
>
> Thanks,
> Kishore Potnuru
>
>
> On Wed, Jul 8, 2020 at 11:00 AM Apostolis Hardalias <
> a.hardalias at skroutz.gr> wrote:
>
>>
>> On 7/8/20 12:53 PM, Kishore Potnuru wrote:
>> > Hi All,
>> >
>> > I request your help on this.
>> >
>> > I have 2 dovecot test servers (IMAP protocol) installed with the
>> > following configuration.
>> > =============
>> > [root at devap01 ~]# cat /etc/redhat-*
>> > Red Hat Enterprise Linux Server release 6.10 (Santiago)
>> >
>> > [root at devap01 ~]# dovecot --version
>> > 2.0.9
>> >
>> > [root at devap01 ~]# postconf | grep mail_version
>> > mail_version = 2.6.6
>> > ===============
>> >
>> > I have another server also "devap02" with the same configuration.
>> >
>> > Couple of points/questions/queries here.
>> >
>> > 1. I know these servers are having old dovecot versions. I would like
>> > to upgrade to the latest versions. Could you please suggest the steps
>> > for upgrading to the latest version in redhat (step by step details
>> > are helpful please) . If I upgrade to the latest version, will there
>> > be any impact on the existing configuration/setup?
>>
>> Check the documents posted here:
>>
>> https://doc.dovecot.org/installation_guide/upgrading/from-2.0-to-2.1/
>>
>> https://doc.dovecot.org/installation_guide/upgrading/from-2.1-to-2.2/
>>
>> https://doc.dovecot.org/installation_guide/upgrading/from-2.2-to-2.3/
>>
>> Depending on your setup, you may also need to check for changes to
>> additional software (e.g. amavis)
>>
>> >
>> > 2. Now I have added these 2 servers behind the Load Balancer. Enabled
>> > 110/143 ports on the Load Balancer FQDN (test.pop3.testing.com
>> > <http://test.pop3.testing.com>) and opened the firewall ports. Here I
>> > configured IMAP settings from microsoft outlook to see the emails. I
>> > gave the Incoming Mail Server & Outgoing mail server as
>> > "test.pop3.testing.com <http://test.pop3.testing.com>". It is
>> > configured without errors in Outlook. But I see these 2 types issues
>> > (shared storage & individual storage)
>> >
>> >    a) individual separate storage - When I send 10 emails to LB FQDN
>> > (test.pop3.testing.com <http://test.pop3.testing.com>), the emails are
>> > going to 2 backend servers. But when i see the emails from Outlook
>> > inbox, it shows 5 emails from one server for some time. After sometime
>> > it shows other 5 emails in the inbox. But, I am not able to see all 10
>> > emails at same time in my inbox. Please suggest how to fix this issue?
>> > In this scenario, I have separate individual storage in both the
>> servers.
>>
>> I'm not sure if you've set it up already because it's unclear from the
>> configuration you posted but, you may wanna have a look at:
>> https://wiki.dovecot.org/Replication
>>
>> I suggest using replication after you've upgraded since earlier versions
>> of dovecot had a few issues.
>>
>>
>> >    b) common shared storage - I have tried a different scenario also.
>> > I also have one common NFS storage. So, I have configured that storage
>> > in both the servers. So when I sent 10 emails, I see all the 10 emails
>> > from both the servers as it is common shared storage. But, I am not
>> > getting those 10 emails delivered into my Outlook. I have made all the
>> > configuration correctly. Please suggest what is the mistake here.
>> >
>> > Dovecot.conf
>> > =========================================================
>> >
>> > [root at devap01 ~]# cat /etc/dovecot/dovecot.conf
>> > disable_plaintext_auth = no
>> >
>> > listen = *
>> > log_path = /var/log/dovecot.log
>> > mail_location = maildir:/r3/mail/virtual/%d/%n/Maildir/
>> > passdb {
>> > args = /etc/dovecot/passwd
>> > driver = passwd-file
>> > }
>> > pop3_uidl_format = %g
>> > protocols = imap pop3
>> > ssl = yes
>> > ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
>> > ssl_key = </etc/pki/dovecot/private/dovecot.pem
>> >
>> > userdb {
>> > args = uid=vmail gid=vmail home=/r3/mail/virtual/%d/%n
>> > driver = static
>> > }
>> > mail_debug = no
>> > verbose_ssl = no
>> > =========================================================
>> >
>> > Please help me here.
>> >
>> > Thanks,
>> > Kishore Potnuru
>>
>
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