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    <p>Hi Christian,</p>
    <p><span class="VIiyi" lang="en"><span class="JLqJ4b ChMk0b"
          data-language-for-alternatives="en"
          data-language-to-translate-into="it" data-phrase-index="0"
          data-number-of-phrases="1"><span>this is just what I wanted to
            do from the beginning, but reading here I thought it was not
            possible:</span></span></span></p>
    <p><span class="VIiyi" lang="en"><span class="JLqJ4b ChMk0b"
          data-language-for-alternatives="en"
          data-language-to-translate-into="it" data-phrase-index="0"
          data-number-of-phrases="1"><span>"Replication works only
            between server pairs. If you have a large cluster, you need
            multiple independently functioning Dovecot backend pairs. <u><b>This
                means that director isn't currently supported with
                replication</b></u>. The replication in general is a bit
            resource intensive, so it's not recommended to be used in
            multi-million user installations. "</span></span></span></p>
    <p><span class="VIiyi" lang="en"><span class="JLqJ4b ChMk0b"
          data-language-for-alternatives="en"
          data-language-to-translate-into="it" data-phrase-index="0"
          data-number-of-phrases="1"><span>From:
            <a class="moz-txt-link-freetext" href="https://wiki.dovecot.org/Replication">https://wiki.dovecot.org/Replication</a><br>
          </span></span></span></p>
    <p><span class="VIiyi" lang="en"><span class="JLqJ4b ChMk0b"
          data-language-for-alternatives="en"
          data-language-to-translate-into="it" data-phrase-index="0"
          data-number-of-phrases="1"><span>I'll try then!</span></span></span></p>
    <p><span class="VIiyi" lang="en"><span class="JLqJ4b ChMk0b"
          data-language-for-alternatives="en"
          data-language-to-translate-into="it" data-phrase-index="0"
          data-number-of-phrases="1"><span>Thanks</span></span></span></p>
    <p><span class="VIiyi" lang="en"><span class="JLqJ4b ChMk0b"
          data-language-for-alternatives="en"
          data-language-to-translate-into="it" data-phrase-index="0"
          data-number-of-phrases="1"><span>Cheers<br>
          </span></span></span> </p>
    <div class="moz-cite-prefix">On 01/12/21 10:08, Christian Mack
      wrote:<br>
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    <blockquote type="cite"
      cite="mid:e6c8c4d3-1dfe-fdcc-930f-58d5169c34e9@uni-konstanz.de">
      <pre class="moz-quote-pre" wrap="">Hello

Thunderbird/Outlook does that, because you change the servername in your
configuration.

In order to avoid that, use a reverse proxy and switch on it between
your IMAP servers.
You can use a dovecot director for that.
In your clients you only configure the proxy.
That also avoids changing configuration on all of your clients.


Kind regards,
Christian Mack

Am 01.12.21 um 09:31 schrieb Claudio Corvino:
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        <pre class="moz-quote-pre" wrap="">Hi,

I have two IMAP/LMTP Dovecot server in replica (version 2.3.4.1) both
connected through an IPsec tunnel, I use LDAP/AD for /userdb, /all seems
to be working.

I have a question: if I switch my Thunderbird/Outlook client to use the
other server I have to download again all the emails, about 10 GB.

Is there any way to avoid this? Do I have to download again all the
folders every time I switch from node A to node B on my client?

Thanks!

Regards

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      </blockquote>
      <pre class="moz-quote-pre" wrap="">

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