again with mail links

Doc/Sdi/mail.xml

@@ -15,15 +15,17 @@
       <listitem>
         <para>Good starting point and Installguide (in German) but for CentoOS
         <link
-        xlink:href="dokuwiki.nausch.org">dokuwiki.nausch.org</link>.</para>
+        xlink:href="http://dokuwiki.nausch.org/doku.php/centos:mailserver:grundinstallation_von_postfix">dokuwiki.nausch.org</link>.</para>
       </listitem>
 
       <listitem>
-        <para>Installguide on Debian</para>
+        <para><link xlink:href="https://wiki.debian.org/Postfix">Installguide
+        on Debian</link></para>
       </listitem>
 
       <listitem>
-        <para xml:lang="de">Postfix Dokumentation</para>
+        <para xml:lang="de"><link xlink:href="???">Postfix
+        Dokumentation</link></para>
       </listitem>
 
       <listitem>
@@ -32,11 +34,14 @@
       </listitem>
 
       <listitem>
-        <para xml:lang="de">Eigener Mailserver mit Postfix und Dovecot</para>
+        <para xml:lang="de"><link
+        xlink:href="http://www.admin-magazin.de/Das-Heft/2012/02/Eigener-Mailserver-mit-Postfix-und-Dovecot">Eigener
+        Mailserver mit Postfix und Dovecot</link></para>
       </listitem>
 
       <listitem>
-        <para xml:lang="de">Postfix einrichten und absichern</para>
+        <para xml:lang="de"><link xlink:href="???">Postfix einrichten und
+        absichern</link></para>
       </listitem>
 
       <listitem>
@@ -234,7 +239,8 @@
 
               <tip>
                 <para>Read about <command
-                xlink:href="http://linux.die.net/man/1/postmap">postmap</command>.</para>
+                xlink:href="http://linux.die.net/man/1/postmap">postmap</command>
+                and set your local resolver to your own DNS</para>
               </tip>
             </listitem>
           </itemizedlist>
@@ -266,7 +272,7 @@
             </listitem>
 
             <listitem>
-              <para>Use a <acronym>MUA</acronym> send an email to your HdM
+              <para>Use a <acronym>MUA</acronym> to send an email to your HdM
               Account using your mail server system as a relay.</para>
             </listitem>
           </itemizedlist>
@@ -284,12 +290,9 @@
 
       <para><itemizedlist>
           <listitem>
-            <para>smtpd_*_restrictions / open relay</para>
-          </listitem>
-
-          <listitem>
-            <programlisting language="none">
-	    </programlisting>
+            <para>Now we will use the smtpd_*_restrictions in the
+            <filename>main.cf</filename>. This are one key element to make
+            your mailserver block spam and other unwanted mails.</para>
           </listitem>
         </itemizedlist></para>