The Servers are not operational

Cause:

This error could be due to any of the following reasons.

• Domain Controllers are down.
• Exchange Servers are not available.
• Firewall has been enabled, and port 389 is closed.
• The Exchange server is busy.

Resolution:

Exchange Reporter Plus uses port 389 for LDAP connection. If firewall is enabled, ensure that the port 389 is added to the exception list.