diff --git a/index.html b/index.html
index 57332dda2..843f6f71c 100644
--- a/index.html
+++ b/index.html
@@ -2067,7 +2067,7 @@ Each container represents a single application.</p>
 <li><a href="https://redis.io/">Redis</a></li>
 <li><a href="https://www.rspamd.com/">Rspamd</a></li>
 <li><a href="https://sogo.nu/">SOGo</a></li>
-<li><a href="http://lucene.apache.org/solr/">Solr</a> (optional)</li>
+<li><a href="https://solr.apache.org/">Solr</a> (optional)</li>
 <li><a href="https://unbound.net/">Unbound</a></li>
 <li>A Watchdog to provide basic monitoring</li>
 </ul>
diff --git a/sitemap.xml b/sitemap.xml
index 0b2ab808a..f77f55604 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -2,472 +2,472 @@
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/b_n_r_backup/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/b_n_r_restore/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/client/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/debug-admin_login_sogo/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/debug-attach_service/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/debug-common_problems/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/debug-logs/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/debug-mysql_upgrade/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/debug-reset-tls/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/debug-reset_pw/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/debug-rm_volumes/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/debug/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/firststeps-disable_ipv6/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/firststeps-ip_bindings/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/firststeps-local_mta/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/firststeps-logging/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/firststeps-relayhost/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/firststeps-rp/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/firststeps-rspamd_ui/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/firststeps-snat/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/firststeps-ssl/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/firststeps-sync_jobs_migration/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/firststeps-trust_networks/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/i_u_m_deinstall/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/i_u_m_install/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/i_u_m_migration/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/i_u_m_update/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/model-acl/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/model-passwd/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/model-sender_rcv/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/prerequisite-dns/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/prerequisite-system/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/restrictions_ip_accss/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/third_party-borgmatic/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/third_party-exchange_onprem/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/third_party-gitea/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/third_party-gogs/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/third_party-mailpiler_integration/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/third_party-nextcloud/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/third_party-portainer/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/third_party-roundcube/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/third_party-thunderbird/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-80_to_443/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-autodiscover_config/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-backup_restore-maildir/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-backup_restore-mysql/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-docker-cust_dockerfiles/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-docker-dc_bash_compl/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-dovecot-any_acl/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-dovecot-expunge/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-dovecot-extra_conf/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-dovecot-fts/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-dovecot-idle_interval/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-dovecot-mail-crypt/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-dovecot-more/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-dovecot-public_folder/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-dovecot-static_master/</loc>
-         <lastmod>2021-06-19</lastmod>
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     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-dovecot-vmail-volume/</loc>
-         <lastmod>2021-06-19</lastmod>
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     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-fido2/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
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     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-mailcow_ui-bl_wl/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
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     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-mailcow_ui-config/</loc>
-         <lastmod>2021-06-19</lastmod>
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          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-mailcow_ui-css/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-mailcow_ui-pushover/</loc>
-         <lastmod>2021-06-19</lastmod>
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     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-mailcow_ui-spamalias/</loc>
-         <lastmod>2021-06-19</lastmod>
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     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-mailcow_ui-spamfilter/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
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     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-mailcow_ui-tagging/</loc>
-         <lastmod>2021-06-19</lastmod>
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     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-mailcow_ui-tfa/</loc>
-         <lastmod>2021-06-19</lastmod>
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     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-nginx/</loc>
-         <lastmod>2021-06-19</lastmod>
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     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-postfix-attachment_size/</loc>
-         <lastmod>2021-06-19</lastmod>
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     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-postfix-custom_transport/</loc>
-         <lastmod>2021-06-19</lastmod>
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     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-postfix-disable_sender_verification/</loc>
-         <lastmod>2021-06-19</lastmod>
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-         <lastmod>2021-06-19</lastmod>
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-         <lastmod>2021-06-19</lastmod>
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     <url>
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-         <lastmod>2021-06-19</lastmod>
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-         <lastmod>2021-06-19</lastmod>
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-         <lastmod>2021-06-19</lastmod>
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-         <lastmod>2021-06-19</lastmod>
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-         <lastmod>2021-06-19</lastmod>
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     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-webmail-site/</loc>
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     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-why_unbound/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-xmpp-enable/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/u_e-xmpp-faq/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/client/client-android/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/client/client-apple/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/client/client-emclient/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/client/client-gajim_xmpp_client/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/client/client-kontact/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/client/client-manual/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/client/client-outlook/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/client/client-thunderbird/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/client/client-windows/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
     <url>
          <loc>https://mailcow.github.io/mailcow-dockerized-docs/client/client-windowsphone/</loc>
-         <lastmod>2021-06-19</lastmod>
+         <lastmod>2021-06-21</lastmod>
          <changefreq>daily</changefreq>
     </url>
 </urlset>
\ No newline at end of file
diff --git a/sitemap.xml.gz b/sitemap.xml.gz
index 6978ef07f..62b718560 100644
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