title: SQL Server mirroring connection doesnt work
body: <p>I have 2 servers <code>srv-erp1</code> and <code>srv-erp3</code>. I made them mirror on each other. All setup is done by lots of tutorials and examples.</p>
  
  <p>But when I call  </p>
  
  <pre><code>ALTER DATABASE MIRROR_TEST SET PARTNER = 'TCP://srv-erp3:5022'  
  </code></pre>
  
  <p>It`s response is:</p>
  
  <blockquote>
    <p>The server network address "TCP://srv-erp3:5022" can not be reached or
    does not exist. Check the network address name and that the ports for
    the local and remote endpoints are operational.</p>
  </blockquote>
  
  <p>I go to cmd on <code>srv-erp3</code> and use <code>netstat -an...</code> this port is listening.<br>
  I go to cmd on <code>srv-erp1</code> and use <code>telnet srv-erp3 5022...</code>and its ok to connect.</p>
  
  <p>All firewalls are turned off. The only difference in config of srvrs is that <code>srv-erp1</code> is on Windows Server 2003 R2 x64, and <code>srv-erp3</code> is on Windows 2008 R2 x64</p>
  
  <p>What can be the reason of this problem?</p>
  
  <p>Regards, Dmitry.</p>