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    <p>Hello All,</p>
    <p>About<br>
      <i>Restricting Subscribed IMAP Folders For the iPhone</i><i><br>
      </i><br>
      I looked into this and there seems to be no way to configure this
      from an iphone, I also looked into Apple Configurator, but there
      also is no setting that can be provisioned via mobileconfig to
      achieve this.<br>
      <br>
      The only thing that may be helpful is the IMAP Path Prefix
      setting, that defaults to root ( / ). This setting is available
      from Account -> Advanced on iphone.<br>
      <br>
      If a specific user has sync issues, this setting may be used to
      reduce the amount of mail synced to that user's phone by moving
      folders outside the path prefix. These things can be
      scripted/provisioned, but it remains a hack that is probably not
      nice for a larger group of users. <br>
      <br>
      Barry</p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 6/28/20 6:06 AM, Randy Leiker wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:523064512.387767.1593317173637.JavaMail.zimbra@skywaynetworks.com">
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                              <div>Hello Zeta Alliance Community,<br>
                                <br>
                                Here is a summary of this week’s
                                conference call.  A few brief reminders:<br>
                              </div>
                              <ul>
                                <li>Conference calls are every <span
                                    class="Object"
                                    id="OBJ_PREFIX_DWT2133_com_zimbra_date"><span
                                      class="Object"
                                      id="OBJ_PREFIX_DWT2152_com_zimbra_date"><span
                                        class="Object"
                                        id="OBJ_PREFIX_DWT4259_com_zimbra_date"><span
                                          class="Object"
                                          id="OBJ_PREFIX_DWT4274_com_zimbra_date"><span
                                            class="Object"
                                            id="OBJ_PREFIX_DWT2284_com_zimbra_date"><span
                                              class="Object"
                                              id="OBJ_PREFIX_DWT2295_com_zimbra_date"><span
                                                class="Object"
                                                id="OBJ_PREFIX_DWT3487_com_zimbra_date"><span
                                                  class="Object"
                                                  id="OBJ_PREFIX_DWT3499_com_zimbra_date"><span
                                                    class="Object"
                                                    id="OBJ_PREFIX_DWT3936_com_zimbra_date"><span
                                                      class="Object"
                                                      id="OBJ_PREFIX_DWT3952_com_zimbra_date"><span
                                                        class="Object"
                                                        id="OBJ_PREFIX_DWT412_com_zimbra_date"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT426_com_zimbra_date"><span class="Object"
                                                          id="OBJ_PREFIX_DWT3694_com_zimbra_date"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT3715_com_zimbra_date"><span class="Object"
                                                          id="OBJ_PREFIX_DWT275_com_zimbra_date"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT298_com_zimbra_date"><span class="Object"
                                                          id="OBJ_PREFIX_DWT149_com_zimbra_date"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT167_com_zimbra_date"><span class="Object" role="link"
id="OBJ_PREFIX_DWT959_com_zimbra_date"><span class="Object" role="link"
id="OBJ_PREFIX_DWT977_com_zimbra_date">Tuesday</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
                                  and open to all using either the
                                  FreeConferenceCall.com VoIP app or via
                                  a dial-in number: <span
                                    class="Object"
                                    id="OBJ_PREFIX_DWT2134_com_zimbra_url"><span
                                      class="Object"
                                      id="OBJ_PREFIX_DWT2153_com_zimbra_url"><span
                                        class="Object"
                                        id="OBJ_PREFIX_DWT4260_com_zimbra_url"><span
                                          class="Object"
                                          id="OBJ_PREFIX_DWT4275_com_zimbra_url"><span
                                            class="Object"
                                            id="OBJ_PREFIX_DWT2285_com_zimbra_url"><span
                                              class="Object"
                                              id="OBJ_PREFIX_DWT2296_com_zimbra_url"><span
                                                class="Object"
                                                id="OBJ_PREFIX_DWT3488_com_zimbra_url"><span
                                                  class="Object"
                                                  id="OBJ_PREFIX_DWT3500_com_zimbra_url"><span
                                                    class="Object"
                                                    id="OBJ_PREFIX_DWT3937_com_zimbra_url"><span
                                                      class="Object"
                                                      id="OBJ_PREFIX_DWT3953_com_zimbra_url"><span
                                                        class="Object"
                                                        id="OBJ_PREFIX_DWT413_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT427_com_zimbra_url"><span class="Object"
                                                          id="OBJ_PREFIX_DWT3695_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT3716_com_zimbra_url"><span class="Object"
                                                          id="OBJ_PREFIX_DWT276_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT299_com_zimbra_url"><span class="Object"
                                                          id="OBJ_PREFIX_DWT150_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT168_com_zimbra_url"><span class="Object" role="link"
                                                          id="OBJ_PREFIX_DWT960_com_zimbra_url"><span
                                                          class="Object"
                                                          role="link"
                                                          id="OBJ_PREFIX_DWT978_com_zimbra_url"><a
href="https://www.freeconferencecall.com/wall/zetalliance" rel="nofollow
                                                          noopener
                                                          noreferrer
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                                                          target="_blank"
data-mce-href="https://www.freeconferencecall.com/wall/zetalliance"
                                                          moz-do-not-send="true">https://www.freeconferencecall.com/wall/zetalliance</a></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span><br>
                                </li>
                                <li>Each week’s call agenda can be found
                                  at: <span class="Object"
                                    id="OBJ_PREFIX_DWT2135_com_zimbra_url"><span
                                      class="Object"
                                      id="OBJ_PREFIX_DWT2154_com_zimbra_url"><span
                                        class="Object"
                                        id="OBJ_PREFIX_DWT4261_com_zimbra_url"><span
                                          class="Object"
                                          id="OBJ_PREFIX_DWT4276_com_zimbra_url"><span
                                            class="Object"
                                            id="OBJ_PREFIX_DWT2286_com_zimbra_url"><span
                                              class="Object"
                                              id="OBJ_PREFIX_DWT2297_com_zimbra_url"><span
                                                class="Object"
                                                id="OBJ_PREFIX_DWT3489_com_zimbra_url"><span
                                                  class="Object"
                                                  id="OBJ_PREFIX_DWT3501_com_zimbra_url"><span
                                                    class="Object"
                                                    id="OBJ_PREFIX_DWT3938_com_zimbra_url"><span
                                                      class="Object"
                                                      id="OBJ_PREFIX_DWT3954_com_zimbra_url"><span
                                                        class="Object"
                                                        id="OBJ_PREFIX_DWT414_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT428_com_zimbra_url"><span class="Object"
                                                          id="OBJ_PREFIX_DWT3696_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT3717_com_zimbra_url"><span class="Object"
                                                          id="OBJ_PREFIX_DWT277_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT300_com_zimbra_url"><span class="Object"
                                                          id="OBJ_PREFIX_DWT151_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT169_com_zimbra_url"><span class="Object" role="link"
                                                          id="OBJ_PREFIX_DWT961_com_zimbra_url"><span
                                                          class="Object"
                                                          role="link"
                                                          id="OBJ_PREFIX_DWT979_com_zimbra_url"><a
href="https://docs.google.com/document/d/1uUUDJpwp2CAylU6lxtbEdVcUX_qSbciyes6gLTWw2fY/edit"
                                                          rel="nofollow
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                                                          target="_blank"
data-mce-href="https://docs.google.com/document/d/1uUUDJpwp2CAylU6lxtbEdVcUX_qSbciyes6gLTWw2fY/edit"
moz-do-not-send="true">https://docs.google.com/document/d/1uUUDJpwp2CAylU6lxtbEdVcUX_qSbciyes6gLTWw2fY/edit</a></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span><br>
                                </li>
                                <li>A copy of each week’s summary is
                                  also posted to the Zimbra Forums:
                                  <ul>
                                    <li><span class="Object"
                                        id="OBJ_PREFIX_DWT2140_com_zimbra_date"><span
                                          class="Object"
                                          id="OBJ_PREFIX_DWT2159_com_zimbra_date"><span
                                            class="Object"
                                            id="OBJ_PREFIX_DWT4266_com_zimbra_date"><span
                                              class="Object"
                                              id="OBJ_PREFIX_DWT4281_com_zimbra_date"><span
                                                class="Object"
                                                id="OBJ_PREFIX_DWT2291_com_zimbra_date"><span
                                                  class="Object"
                                                  id="OBJ_PREFIX_DWT2302_com_zimbra_date"><span
                                                    class="Object"
                                                    id="OBJ_PREFIX_DWT3494_com_zimbra_date"><span
                                                      class="Object"
                                                      id="OBJ_PREFIX_DWT3506_com_zimbra_date"><span
                                                        class="Object"
                                                        id="OBJ_PREFIX_DWT3941_com_zimbra_date"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT3957_com_zimbra_date"><span class="Object"
                                                          id="OBJ_PREFIX_DWT417_com_zimbra_date"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT431_com_zimbra_date"><span class="Object"
                                                          id="OBJ_PREFIX_DWT3699_com_zimbra_date"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT3720_com_zimbra_date"><span class="Object"
                                                          id="OBJ_PREFIX_DWT278_com_zimbra_date"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT301_com_zimbra_date"><span class="Object"
                                                          id="OBJ_PREFIX_DWT152_com_zimbra_date"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT170_com_zimbra_date"><span class="Object" role="link"
id="OBJ_PREFIX_DWT962_com_zimbra_date"><span class="Object" role="link"
id="OBJ_PREFIX_DWT980_com_zimbra_date">April 2020</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>:
                                      <span class="Object"
                                        id="OBJ_PREFIX_DWT2141_com_zimbra_url"><span
                                          class="Object"
                                          id="OBJ_PREFIX_DWT2160_com_zimbra_url"><span
                                            class="Object"
                                            id="OBJ_PREFIX_DWT4267_com_zimbra_url"><span
                                              class="Object"
                                              id="OBJ_PREFIX_DWT4282_com_zimbra_url"><span
                                                class="Object"
                                                id="OBJ_PREFIX_DWT2292_com_zimbra_url"><span
                                                  class="Object"
                                                  id="OBJ_PREFIX_DWT2303_com_zimbra_url"><span
                                                    class="Object"
                                                    id="OBJ_PREFIX_DWT3495_com_zimbra_url"><span
                                                      class="Object"
                                                      id="OBJ_PREFIX_DWT3507_com_zimbra_url"><span
                                                        class="Object"
                                                        id="OBJ_PREFIX_DWT3942_com_zimbra_url"><span
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id="OBJ_PREFIX_DWT3958_com_zimbra_url"><span class="Object"
                                                          id="OBJ_PREFIX_DWT418_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT432_com_zimbra_url"><span class="Object"
                                                          id="OBJ_PREFIX_DWT3700_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT3721_com_zimbra_url"><span class="Object"
                                                          id="OBJ_PREFIX_DWT279_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT302_com_zimbra_url"><span class="Object"
                                                          id="OBJ_PREFIX_DWT153_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT171_com_zimbra_url"><span class="Object" role="link"
                                                          id="OBJ_PREFIX_DWT963_com_zimbra_url"><span
                                                          class="Object"
                                                          role="link"
                                                          id="OBJ_PREFIX_DWT981_com_zimbra_url"><a
href="https://forums.zimbra.org/viewtopic.php?f=9&t=68073"
                                                          rel="nofollow
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                                                          target="_blank"
data-mce-href="https://forums.zimbra.org/viewtopic.php?f=9&t=68073"
moz-do-not-send="true">https://forums.zimbra.org/viewtopic.php?f=9&t=68073</a></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span><br>
                                    </li>
                                    <li><span class="Object"><span
                                          class="Object"
                                          id="OBJ_PREFIX_DWT3943_com_zimbra_date"><span
                                            class="Object"
                                            id="OBJ_PREFIX_DWT3959_com_zimbra_date"><span
                                              class="Object"
                                              id="OBJ_PREFIX_DWT419_com_zimbra_date"><span
                                                class="Object"
                                                id="OBJ_PREFIX_DWT433_com_zimbra_date"><span
                                                  class="Object"
                                                  id="OBJ_PREFIX_DWT3701_com_zimbra_date"><span
                                                    class="Object"
                                                    id="OBJ_PREFIX_DWT3722_com_zimbra_date"><span
                                                      class="Object"
                                                      id="OBJ_PREFIX_DWT280_com_zimbra_date"><span
                                                        class="Object"
                                                        id="OBJ_PREFIX_DWT303_com_zimbra_date"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT154_com_zimbra_date"><span class="Object"
                                                          id="OBJ_PREFIX_DWT172_com_zimbra_date"><span
                                                          class="Object"
                                                          role="link"
                                                          id="OBJ_PREFIX_DWT964_com_zimbra_date"><span
                                                          class="Object"
                                                          role="link"
                                                          id="OBJ_PREFIX_DWT982_com_zimbra_date">May
                                                          2020</span></span></span></span></span></span></span></span></span></span></span></span>:</span><span
                                        style="color: #0000ff;"
                                        data-mce-style="color: #0000ff;">
                                        <span class="Object"
                                          id="OBJ_PREFIX_DWT3944_com_zimbra_url"><span
                                            class="Object"
                                            id="OBJ_PREFIX_DWT3960_com_zimbra_url"><span
                                              class="Object"
                                              id="OBJ_PREFIX_DWT420_com_zimbra_url"><span
                                                class="Object"
                                                id="OBJ_PREFIX_DWT434_com_zimbra_url"><span
                                                  class="Object"
                                                  id="OBJ_PREFIX_DWT3702_com_zimbra_url"><span
                                                    class="Object"
                                                    id="OBJ_PREFIX_DWT3723_com_zimbra_url"><span
                                                      class="Object"
                                                      id="OBJ_PREFIX_DWT281_com_zimbra_url"><span
                                                        class="Object"
                                                        id="OBJ_PREFIX_DWT304_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT155_com_zimbra_url"><span class="Object"
                                                          id="OBJ_PREFIX_DWT173_com_zimbra_url"><span
                                                          class="Object"
                                                          role="link"
                                                          id="OBJ_PREFIX_DWT965_com_zimbra_url"><span
                                                          class="Object"
                                                          role="link"
                                                          id="OBJ_PREFIX_DWT983_com_zimbra_url"><a
href="https://forums.zimbra.org/viewtopic.php?f=9&t=68214"
                                                          rel="nofollow
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                                                          target="_blank"
data-mce-href="https://forums.zimbra.org/viewtopic.php?f=9&t=68214"
moz-do-not-send="true"><span style="color: #000000;"
                                                          data-mce-style="color:
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style="font-family: 'arial', sans-serif;" data-mce-style="font-family:
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style="text-decoration: none;" data-mce-style="text-decoration: none;"></span></span></span></a></span></span></span></span></span></span></span></span></span></span></span></span><span
                                          class="Object"
                                          id="OBJ_PREFIX_DWT3945_com_zimbra_url"><span
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                                                id="OBJ_PREFIX_DWT435_com_zimbra_url"><span
                                                  class="Object"
                                                  id="OBJ_PREFIX_DWT3703_com_zimbra_url"><span
                                                    class="Object"
                                                    id="OBJ_PREFIX_DWT3724_com_zimbra_url"><span
                                                      class="Object"
                                                      id="OBJ_PREFIX_DWT282_com_zimbra_url"><span
                                                        class="Object"
                                                        id="OBJ_PREFIX_DWT305_com_zimbra_url"><span
                                                          class="Object"
id="OBJ_PREFIX_DWT156_com_zimbra_url"><span class="Object"
                                                          id="OBJ_PREFIX_DWT174_com_zimbra_url"><span
                                                          class="Object"
                                                          role="link"
                                                          id="OBJ_PREFIX_DWT966_com_zimbra_url"><span
                                                          class="Object"
                                                          role="link"
                                                          id="OBJ_PREFIX_DWT984_com_zimbra_url"><a
href="https://forums.zimbra.org/viewtopic.php?f=9&t=68214"
                                                          rel="noopener
                                                          nofollow
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                                <li>Constructive feedback on these call
                                  summaries is always welcome.</li>
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        <div>June 23, 2020 Conference Call Summary<br>
          <br>
          <strong>ActiveSync Issue When Synchronizing A Large Number Of
            Folders</strong><br>
          Mark S. reported encountering an issue with one of his clients
          who has both Android and iPhones, which are setup to sync with
          Zimbra using ActiveSync, where the devices never finish
          syncing, and endlessly restart the sync process.  He said this
          is occurring in 8.8.15 both prior to and after installing
          Patch 10.  He explained that the affected clients’ devices are
          syncing mailboxes with large numbers of mailbox folders for
          email items up to 30 days old, with many of those folders also
          setup for sharing.  The user devices do not report any errors
          when the sync process fails and restarts, but new email only
          appears in the Zimbra Web Client, and not on the users’
          phones.  Each time the sync process fails, most of the
          contacts and calendar items from the phones also disappear,
          but then slowly re-appear as each new sync attempt restarts. 
          Mark said that checking the sync.log file on his Zimbra
          servers shows a warning similar to: “Mobile (username) sync
          invalid sync key for folder (folder number/ID)”.  Mark said he
          opened a support case with Zimbra Support, and asked those on
          the call if they had encountered a similar issue with reaching
          an upper limit on the number of items that ActiveSync can
          successfully synchronize to a phone.<br>
          <br>
          Cine commented that he recalled a case where a Zimbra user had
          158,000 mailbox folders in Outlook, and Outlook was unable to
          successfully complete a sync within the lifetime of the Zimbra
          auth token before the auth token expired.  He said that 70% of
          ActiveSync issues tend to be related to issues with calendar
          items and suggested that if that is the cause of the issue
          that Mark described, that upgrading the client to ActiveSync
          version 16 might be the solution, since an estimated 80% of
          the code related to calendar synchronization was re-written in
          ActiveSync 16.  Cine also suggested using a debug feature
          built-in to Zimbra (<a
href="https://docs.zextras.com/zextras-suite-documentation/latest/mobile-troubleshooting.html#_account_loggers_and_mobile_troubleshooting"
            moz-do-not-send="true">https://docs.zextras.com/zextras-suite-documentation/latest/mobile-troubleshooting.html#_account_loggers_and_mobile_troubleshooting</a>)
          to determine the point at which errors begin occurring for a
          given phone during an ActiveSync session.  Cine explained that
          each mailbox folder has a unique sync key assigned to it, and
          that from Mark’s description, he suspects that after an
          ActiveSync client (phone) or the Zimbra server reach a certain
          threshold of errors, it decides to reset the sync key back to
          0, thereby resulting in another full re-sync of the phone
          being attempted.  Mark asked if the cause of this issue might
          be related to multiple devices attempting an ActiveSync
          against the same folder.  Cine said that that should not
          matter, as the sync keys are device-specific.  John E. added
          that it could be related, as he recalled a case where the
          heartbeat interval setting may be non-negotiable and cause the
          phone not to sync at all as was found to be occurring with the
          Outlook for Android app.<br>
          <br>
          <strong>Restricting Subscribed IMAP Folders For the iPhone</strong><br>
          Noah P. asked if anyone knew of an IMAP email app, available
          for the iPhone, that could selectively subscribe to a subset
          of the email folders within a mailbox, as compared to the
          default behavior of subscribing to all IMAP folders within a
          mailbox.  Cine suggested Nine (9folders.com), which costs
          $10.  John E. suggested that the native iOS Mail app should be
          able to be configured to avoid subscribing to select folders,
          but this capability could not be confirmed during the call.<br>
          <br>
          <strong>Mobile Synchronization For Shared Folders</strong><br>
          Mark S. said that one of his clients has all of their shared
          folders currently enabled for syncing with mobile devices and
          asked how to disable syncing of these folders.  Cine said that
          this is not the default behavior, as shared folders are
          normally disabled and must be individually enabled for syncing
          to mobile devices.  Mark said he suspects the client might
          have enabled this setting for all shared folders prior to
          moving to his hosted Zimbra environment and expressed concern
          about needing to manually disable this feature for a large
          number of shared folders.  Cine said this is fortunately easy
          to do and requires a simple three line Bash script to perform
          a mass update for the client’s shared folders.<br
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              <div><span style="color:rgb( 255 , 102 , 0
                  );font-weight:bold"><br>
                  Randy Leiker (</span><span style="font-weight:bold"> <span
                    style="color:rgb( 51 , 51 , 255
                    );background-color:rgb( 255 , 255 , 255 )"><a class="moz-txt-link-abbreviated" href="mailto:randy@skywaynetworks.com">randy@skywaynetworks.com</a></span>
                  <span style="color:rgb( 255 , 102 , 0 )">)</span></span><br>
                <span style="color:rgb( 0 , 0 , 153 )">Skyway Networks,
                  LLC</span><br>
                <br>
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