Stuck here - help please

[Kishore Potnuru]

Hi Gerald,

Thank you for the details. As per your suggestion, I have made the changes
to dovecot.conf file. Still I don't see any replication is happening.
Please see the dovecot.conf file.

I do not see "/etc/dovecot/conf.d/12-replication.conf" in my servers. So I
had put everything  in the dovecot.conf file only. Please see the complete
data in it below. The below data is in server A. In other server (server B)
Also I have the same configuration, except mail_replica line and it is
pointing to the other server like, " mail_replica =
remote:vmail at bal3200dev001.testorg.com ".

I have generated/configured the ssh keys also for vmail user in both
servers. Now When i manually ssh to the server, it is not asking for a
password.

=====================
=====================
disable_plaintext_auth = no

listen = *
log_path = /var/log/dovecot.log
#mail_location = maildir:/z1nfs/mail/virtual/%d/%n/Maildir/
mail_location = maildir:/z1devenv/mail/virtual/%d/%n/Maildir/
passdb {
        args = /etc/dovecot/passwd
        driver = passwd-file
        }

pop3_uidl_format = %g
protocols = pop3 imap

#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=/z1nfs/mail/virtual/%d/%n
        args = uid=vmail gid=vmail home=/z1devenv/mail/virtual/%d/%n
        driver = static
        }

mail_debug = yes
verbose_ssl = no


# Enable the replication plugin globally
mail_plugins = $mail_plugins notify replication

service replicator {
  process_min_avail = 1
}

dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u
plugin {
  mail_replica = remote:vmail at bal3200dev002.testorg.com
}

service aggregator {
  fifo_listener replication-notify-fifo {
    user = vmail
  }
  unix_listener replication-notify {
    user = vmail
  }
}

service replicator {
  unix_listener replicator-doveadm {
    mode = 0600
    user = vmail
  }
}

replication_max_conns = 10
=====================
=====================

Am i missing anything here? Please guide me.

Thanks,
Kishore Potnuru



On Fri, Jul 17, 2020 at 12:36 AM Gerald Galster <list+dovecot at gcore.biz>
wrote:

>
> I have done the sync manually with "doveadm sync" command. But, I have not
> configured the replication yet.
>
>
> If you don't tell dovecot where to replicate, nothing gets replicated.
>
> I am looking at the below webpage for the replication.
>
> https://wiki.dovecot.org/Replication
>
> I am using the dovecot version  "2.2.36". I am confused with what needs to
> be done after reading that page.
>
> 1. They are talking about v2.3.1 and v2.2+. Which one do I need to follow?
> Could you please give me more details on this? Providing some sample
> settings will be more helpful for me, please.
>
>
> I don't understand your confusion. You are using 2.2.36, which is v2.2+
> (meaning a version greater than 2.2).
> The documentation states you need at least 2.3.1 if you want to use the
> noreplicate feature.
> So you can't use that with 2.2.36, but as your goal is to replicate
> everything you don't need "noreplicate".
> Besides that I can't see any difference in configuring replication for
> 2.2/2.3.
>
> If you want to replicate emails with ssh you just have to follow the first
> section, the sample settings are
> right on that page. It's basically copying everything from "mail_plugins =
> $mail_plugins notify replication"
> to "replication_max_conns = 10" into a config file like
> /etc/dovecot/conf.d/12-replication.conf
>
> You only have to change the following line to match your server/ssh setup:
> mail_replica = remote:vmail at anotherhost.example.com
>
> Then generate and configure ssh keys for user vmail (passwordless
> authentication) on both servers.
>
> 2. Also, do I need to set the replication on both of my servers the same
> and as it is?
>
>
> On server A) you should configure mail_replica = remote:vmail at server_B and
> on server B) you should configure mail_replica = remote:vmail at server_A
>
> If you skip B) and new mail arrives on B) it is not immediately synced to
> A)
> In that case you would have to wait until a mail gets synced from A)
> (you remember sync is bidirectional)
>
> Best regards
> Gerald
>
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