Migration from one server to 2 new servers

[Kishore Potnuru]

I tried this command also. It didn't work. It shows syntax again. Please
see the supported commands in dovecot 2.0.9 version. This doesn't support
replication also as per syntax, if i am not wrong. Please suggest me.

[root at production ~]# doveadm backup -u kishore at test.org.com
remote:vmail at production2.test.org.com
usage: doveadm [-Dv] [-f <formatter>] <command> [<args>]

  altmove      [-u <user>|-A] [-S <socket_path>] <search query>
  auth         [-a <auth socket path>] [-x <auth info>] <user> [<password>]
  config       [doveconf parameters]
  director     add|flush|map|remove|status
  dump         [-t <type>] <path>
  expunge      [-u <user>|-A] [-S <socket_path>] <search query>
  fetch        [-u <user>|-A] [-S <socket_path>] <fields> <search query>
  force-resync [-u <user>|-A] [-S <socket_path>] <mailbox>
  help         <cmd>
  import       [-u <user>|-A] [-S <socket_path>] <source mail location>
<dest parent mailbox> <search query>
  kick         [-a <anvil socket path>] [-f] <user mask>[|]<ip/bits>
  log          find|reopen|test
  mailbox      create|delete|list|mutf7|rename|status|subscribe|unsubscribe
  penalty      [-a <anvil socket path>] [<ip/bits>]
  purge        [-u <user>|-A] [-S <socket_path>]
  pw           [-l] [-p plaintext] [-r rounds] [-s scheme] [-u user] [-V]
  reload
  search       [-u <user>|-A] [-S <socket_path>] <search query>
  sis          deduplicate|find
  stop
  user         [-a <userdb socket path>] [-x <auth info>] <user mask> [...]
  who          [-a <anvil socket path>] [-1] [<user mask>] [<ip/bits>]


On Mon, Jul 27, 2020 at 2:22 PM Admin dishaw.org <admin at dishaw.org> wrote:

>
>
> > On Jul 27, 2020, at 4:59 AM, Kishore Potnuru <kishore.reachme at gmail.com>
> wrote:
> >
> > Hi
> >
> > I am in the process/planning of moving from my existing dovecot
> imap/pop3 server to 2 new servers (for HA/Resilience). I will be
> implementing dovecot replication on new servers.  Please find my current
> and new servers versions.
> >
>
> I recently did a similar move
>
> >
> > What is the best way to stop/copy/migrate the current production data to
> the new servers? I am planning the following steps. Not sure if it is
> correct or not.
> >
>
> Step 0.
>
> Setup replication and have mail replicate from the old servers to the new
> servers.
>
> > 1. Stop the Postfix services on the old server and wait for few mins. So
> that no new emails will be coming to the old servers. Existing emails will
> be delivered to the receipients.
> >
>
> I stopped Postfix on the old servers and did not start Postfix on the new
> servers.  I waited until I saw that no mail was replicating from the old
> Dovecot to the new servers.
>
> > 2. copy/migrate the data from old server to new servers. Please suggest
> what is the best way?
>
> Using the replication mechanism was the best method for me.
>
>
>
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