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    <p>You could try fix this by manually renaming the problematic
      folder. This is a bug though.<br>
    </p>
    <p>Aki<br>
    </p>
    <div class="moz-cite-prefix">On 15.10.2019 17.29, Alex Ha via
      dovecot wrote:<br>
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cite="mid:CAL97c1qx4GYyiaA7SfyP59+c9Ajo4LLMXp=f+P9_Dni4sK38aA@mail.gmail.com">
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      <div dir="ltr">Hi all!
        <div>I'm using Dovecot 2.2.36.4.<br>
          Maybe someone can help, this bug makes the replication
          unusable for me.</div>
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        <div>Thanks,</div>
        <div>Alex</div>
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        <div dir="ltr" class="gmail_attr">On Wed, Sep 25, 2019 at 5:03
          PM Alex Ha <<a href="mailto:alex.handle@gmail.com"
            moz-do-not-send="true">alex.handle@gmail.com</a>> wrote:<br>
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            <p>Hi all!</p>
            <p>I have two dovecot servers with dsync replication over
              tcp.<br>
              Replication works fine except for one user.</p>
            <p># doveadm replicator status<br>
username                                                                                                
              priority fast sync full sync success sync failed<br>
              <a href="mailto:customer@example.com" target="_blank"
                moz-do-not-send="true">customer@example.com</a>                                                                           
              none     00:00:33  07:03:23  03:22:31     y <br>
            </p>
            <p>If i run dsync manually, i get the following error
              message:</p>
            <p>dsync-local(<a href="mailto:customer@example.com"
                target="_blank" moz-do-not-send="true">customer@example.com</a>):
              Debug: brain M: -- Mailbox renamed, restart sync --<br>
              dsync-local(<a href="mailto:customer@example.com"
                target="_blank" moz-do-not-send="true">customer@example.com</a>):
              Error: BUG: Mailbox renaming algorithm got into a
              potentially infinite loop, aborting<br>
              dsync-local(<a href="mailto:customer@example.com"
                target="_blank" moz-do-not-send="true">customer@example.com</a>):
              Error: Mailbox INBOX.Foldername sync: mailbox_rename
              failed: Invalid mailbox name 'Foldername-temp-1': Missing
              namespace prefix 'INBOX.'<br>
            </p>
            <p>For more info see the attached sync_loop.log</p>
            <p>Thanks for your help,</p>
            <p>Alex</p>
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