diff --git a/en_US/installation/0-install.iredmail.on.debian.ubuntu.md b/en_US/installation/0-install.iredmail.on.debian.ubuntu.md
index 76d5c857..3f802b9b 100644
--- a/en_US/installation/0-install.iredmail.on.debian.ubuntu.md
+++ b/en_US/installation/0-install.iredmail.on.debian.ubuntu.md
@@ -228,6 +228,8 @@ hostname or IP address.
 
 ## Get technical support
 
-Please post all issues, feedbacks, feature requests, suggestions in our [online
-support forum](http://www.iredmail.org/forum/), it's more responsible than you
-expected.
+* You are welcome to post issues, feedbacks, feature requests, suggestions in
+  our [online support forum](../forum/), it's more
+  responsible than you expected.
+* We offer paid professional support service too, check our web site for more
+  details: [Get Professional Support from iRedMail Team](../support.html).
diff --git a/en_US/installation/0-install.iredmail.on.freebsd.md b/en_US/installation/0-install.iredmail.on.freebsd.md
index 63f1423d..acd6b223 100644
--- a/en_US/installation/0-install.iredmail.on.freebsd.md
+++ b/en_US/installation/0-install.iredmail.on.freebsd.md
@@ -229,6 +229,8 @@ hostname or IP address.
 
 ## Get technical support
 
-Please post all issues, feedbacks, feature requests, suggestions in our [online
-support forum](http://www.iredmail.org/forum/), it's more responsible than you
-expected.
+* You are welcome to post issues, feedbacks, feature requests, suggestions in
+  our [online support forum](../forum/), it's more
+  responsible than you expected.
+* We offer paid professional support service too, check our web site for more
+  details: [Get Professional Support from iRedMail Team](../support.html).
diff --git a/en_US/installation/0-install.iredmail.on.openbsd.md b/en_US/installation/0-install.iredmail.on.openbsd.md
index d65a9903..0f966f40 100644
--- a/en_US/installation/0-install.iredmail.on.openbsd.md
+++ b/en_US/installation/0-install.iredmail.on.openbsd.md
@@ -252,6 +252,8 @@ hostname or IP address.
 
 ## Get technical support
 
-Please post all issues, feedbacks, feature requests, suggestions in our [online
-support forum](http://www.iredmail.org/forum/), it's more responsible than you
-expected.
+* You are welcome to post issues, feedbacks, feature requests, suggestions in
+  our [online support forum](../forum/), it's more
+  responsible than you expected.
+* We offer paid professional support service too, check our web site for more
+  details: [Get Professional Support from iRedMail Team](../support.html).
diff --git a/en_US/installation/0-install.iredmail.on.rhel.md b/en_US/installation/0-install.iredmail.on.rhel.md
index 01f25451..2ed6b420 100644
--- a/en_US/installation/0-install.iredmail.on.rhel.md
+++ b/en_US/installation/0-install.iredmail.on.rhel.md
@@ -260,6 +260,8 @@ hostname or IP address.
 
 ## Get technical support
 
-Please post all issues, feedbacks, feature requests, suggestions in our [online
-support forum](http://www.iredmail.org/forum/), it's more responsible than you
-expected.
+* You are welcome to post issues, feedbacks, feature requests, suggestions in
+  our [online support forum](../forum/), it's more
+  responsible than you expected.
+* We offer paid professional support service too, check our web site for more
+  details: [Get Professional Support from iRedMail Team](../support.html).
diff --git a/html/install.iredmail.on.debian.ubuntu.html b/html/install.iredmail.on.debian.ubuntu.html
index a4b4b90d..f88f995e 100644
--- a/html/install.iredmail.on.debian.ubuntu.html
+++ b/html/install.iredmail.on.debian.ubuntu.html
@@ -238,9 +238,13 @@ hostname or IP address.</p>
 <li><strong>Awstats</strong>: <a href="httpS://your_server/awstats/awstats.pl?config=web">httpS://your_server/awstats/awstats.pl?config=web</a> (or <code>?config=smtp</code> for SMTP log)</li>
 </ul>
 <h2 id="get-technical-support">Get technical support</h2>
-<p>Please post all issues, feedbacks, feature requests, suggestions in our <a href="http://www.iredmail.org/forum/">online
-support forum</a>, it's more responsible than you
-expected.</p><p style="text-align: center; color: grey;">All documents are available in <a href="https://bitbucket.org/zhb/iredmail-docs/src">BitBucket repository</a>, and published under <a href="http://creativecommons.org/licenses/by-nd/3.0/us/" target="_blank">Creative Commons</a> license. If you found something wrong, please do <a href="http://www.iredmail.org/contact.html">contact us</a> to fix it.<script>
+<ul>
+<li>You are welcome to post issues, feedbacks, feature requests, suggestions in
+  our <a href="../forum/">online support forum</a>, it's more
+  responsible than you expected.</li>
+<li>We offer paid professional support service too, check our web site for more
+  details: <a href="../support.html">Get Professional Support from iRedMail Team</a>.</li>
+</ul><p style="text-align: center; color: grey;">All documents are available in <a href="https://bitbucket.org/zhb/iredmail-docs/src">BitBucket repository</a>, and published under <a href="http://creativecommons.org/licenses/by-nd/3.0/us/" target="_blank">Creative Commons</a> license. If you found something wrong, please do <a href="http://www.iredmail.org/contact.html">contact us</a> to fix it.<script>
   (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
   (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
   m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
diff --git a/html/install.iredmail.on.freebsd.html b/html/install.iredmail.on.freebsd.html
index cb77022e..259cd051 100644
--- a/html/install.iredmail.on.freebsd.html
+++ b/html/install.iredmail.on.freebsd.html
@@ -237,9 +237,13 @@ hostname or IP address.</p>
 <li><strong>Awstats</strong>: <a href="httpS://your_server/awstats/awstats.pl?config=web">httpS://your_server/awstats/awstats.pl?config=web</a> (or <code>?config=smtp</code> for SMTP log)</li>
 </ul>
 <h2 id="get-technical-support">Get technical support</h2>
-<p>Please post all issues, feedbacks, feature requests, suggestions in our <a href="http://www.iredmail.org/forum/">online
-support forum</a>, it's more responsible than you
-expected.</p><p style="text-align: center; color: grey;">All documents are available in <a href="https://bitbucket.org/zhb/iredmail-docs/src">BitBucket repository</a>, and published under <a href="http://creativecommons.org/licenses/by-nd/3.0/us/" target="_blank">Creative Commons</a> license. If you found something wrong, please do <a href="http://www.iredmail.org/contact.html">contact us</a> to fix it.<script>
+<ul>
+<li>You are welcome to post issues, feedbacks, feature requests, suggestions in
+  our <a href="../forum/">online support forum</a>, it's more
+  responsible than you expected.</li>
+<li>We offer paid professional support service too, check our web site for more
+  details: <a href="../support.html">Get Professional Support from iRedMail Team</a>.</li>
+</ul><p style="text-align: center; color: grey;">All documents are available in <a href="https://bitbucket.org/zhb/iredmail-docs/src">BitBucket repository</a>, and published under <a href="http://creativecommons.org/licenses/by-nd/3.0/us/" target="_blank">Creative Commons</a> license. If you found something wrong, please do <a href="http://www.iredmail.org/contact.html">contact us</a> to fix it.<script>
   (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
   (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
   m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
diff --git a/html/install.iredmail.on.freebsd.with.jail.html b/html/install.iredmail.on.freebsd.with.jail.html
index cfc4f0ea..024dc0b4 100644
--- a/html/install.iredmail.on.freebsd.with.jail.html
+++ b/html/install.iredmail.on.freebsd.with.jail.html
@@ -264,7 +264,7 @@ hostname or IP address.</p>
 <li><strong>Awstats</strong>: <a href="httpS://your_server/awstats/awstats.pl?config=web">httpS://your_server/awstats/awstats.pl?config=web</a> (or <code>?config=smtp</code> for SMTP log)</li>
 </ul>
 <h2 id="get-technical-support">Get technical support</h2>
-<p>Please post all issues, feedbacks, feature requests, suggestions in our <a href="http://www.iredmail.org/forum/">online
+<p>Please post all issues, feedbacks, feature requests, suggestions in our <a href="../forum/">online
 support forum</a>, it's more responsible than you
 expected.</p>
 <h2 id="some-tips-for-freebsd-jail">Some Tips for FreeBSD Jail</h2>
diff --git a/html/install.iredmail.on.openbsd.html b/html/install.iredmail.on.openbsd.html
index 82b74607..dcf98797 100644
--- a/html/install.iredmail.on.openbsd.html
+++ b/html/install.iredmail.on.openbsd.html
@@ -265,9 +265,13 @@ hostname or IP address.</p>
 <li><strong>Awstats</strong>: <a href="httpS://your_server/awstats/awstats.pl?config=web">httpS://your_server/awstats/awstats.pl?config=web</a> (or <code>?config=smtp</code> for SMTP log)</li>
 </ul>
 <h2 id="get-technical-support">Get technical support</h2>
-<p>Please post all issues, feedbacks, feature requests, suggestions in our <a href="http://www.iredmail.org/forum/">online
-support forum</a>, it's more responsible than you
-expected.</p><p style="text-align: center; color: grey;">All documents are available in <a href="https://bitbucket.org/zhb/iredmail-docs/src">BitBucket repository</a>, and published under <a href="http://creativecommons.org/licenses/by-nd/3.0/us/" target="_blank">Creative Commons</a> license. If you found something wrong, please do <a href="http://www.iredmail.org/contact.html">contact us</a> to fix it.<script>
+<ul>
+<li>You are welcome to post issues, feedbacks, feature requests, suggestions in
+  our <a href="../forum/">online support forum</a>, it's more
+  responsible than you expected.</li>
+<li>We offer paid professional support service too, check our web site for more
+  details: <a href="../support.html">Get Professional Support from iRedMail Team</a>.</li>
+</ul><p style="text-align: center; color: grey;">All documents are available in <a href="https://bitbucket.org/zhb/iredmail-docs/src">BitBucket repository</a>, and published under <a href="http://creativecommons.org/licenses/by-nd/3.0/us/" target="_blank">Creative Commons</a> license. If you found something wrong, please do <a href="http://www.iredmail.org/contact.html">contact us</a> to fix it.<script>
   (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
   (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
   m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
diff --git a/html/install.iredmail.on.rhel.html b/html/install.iredmail.on.rhel.html
index 66776fc9..427c6280 100644
--- a/html/install.iredmail.on.rhel.html
+++ b/html/install.iredmail.on.rhel.html
@@ -274,9 +274,13 @@ hostname or IP address.</p>
 <li><strong>Awstats</strong>: <a href="httpS://your_server/awstats/awstats.pl?config=web">httpS://your_server/awstats/awstats.pl?config=web</a> (or <code>?config=smtp</code> for SMTP log)</li>
 </ul>
 <h2 id="get-technical-support">Get technical support</h2>
-<p>Please post all issues, feedbacks, feature requests, suggestions in our <a href="http://www.iredmail.org/forum/">online
-support forum</a>, it's more responsible than you
-expected.</p><p style="text-align: center; color: grey;">All documents are available in <a href="https://bitbucket.org/zhb/iredmail-docs/src">BitBucket repository</a>, and published under <a href="http://creativecommons.org/licenses/by-nd/3.0/us/" target="_blank">Creative Commons</a> license. If you found something wrong, please do <a href="http://www.iredmail.org/contact.html">contact us</a> to fix it.<script>
+<ul>
+<li>You are welcome to post issues, feedbacks, feature requests, suggestions in
+  our <a href="../forum/">online support forum</a>, it's more
+  responsible than you expected.</li>
+<li>We offer paid professional support service too, check our web site for more
+  details: <a href="../support.html">Get Professional Support from iRedMail Team</a>.</li>
+</ul><p style="text-align: center; color: grey;">All documents are available in <a href="https://bitbucket.org/zhb/iredmail-docs/src">BitBucket repository</a>, and published under <a href="http://creativecommons.org/licenses/by-nd/3.0/us/" target="_blank">Creative Commons</a> license. If you found something wrong, please do <a href="http://www.iredmail.org/contact.html">contact us</a> to fix it.<script>
   (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
   (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
   m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)