7-6
Networking Guide for Cisco Unity Release 5.x (With Microsoft Exchange)
OL-13844-01
Chapter 7 VPIM Networking
Procedures for Setting Up Cisco Unity to Use VPIM Networking
Event Sink will be installed.) While any method or combination of methods can be used, two common
ways to accomplish name resolution are through Domain Name System (DNS), and by using HOSTS
files.
Whether you use DNS or HOSTS files, you will need to know the fully qualified domain name (FQDN)
and IP address of the remote voice messaging server and the Exchange (or relay) server that handles
incoming SMTP messages. The FQDN is displayed in the Windows System Control Panel on the
Network Identification tab in the Full Computer Name field.
If your organization uses DNS:
• Add a host address resource (A) record and a mail exchange (MX) record in DNS for the remote
voice messaging server, if they do not already exist.
• Verify that an A and MX record exist in DNS for the Exchange server (or relay server) that handles
incoming SMTP messages. If the records are not in DNS, add them before continuing with the setup.
Refer to the Microsoft Windows or applicable operating system documentation for more information
about adding A and MX records in DNS.
If your organization does not use DNS, you can use HOSTS files for name resolution. A HOSTS file is
a text file that contains the mappings of IP addresses to host and domain names. On Microsoft Windows
systems, the HOSTS file is located in the %windir%\System32\Drivers\Etc directory. Edit the HOSTS
files as follows:
• On the Exchange (or relay) server that handles outgoing SMTP messages, add an entry to the
HOSTS file with the FQDN and IP address of the remote voice messaging server.
• Refer to the remote voice messaging server documentation for information on name resolution. You
may need to add an entry to the HOSTS file on the remote voice messaging server with the FQDN
and IP address of the Exchange (or relay) server that handles incoming SMTP messages.
Verifying Connectivity with the Remote Voice Messaging System
Verify that the Exchange (or relay) server(s) that handle outgoing and incoming SMTP messages have
network and SMTP connectivity with the remote voice messaging server, and vice versa.
For networking with another voice messaging server, you may need to install and configure an SMTP
service or gateway on that server. Refer to the documentation of the other voice messaging system for
information on installing the SMTP service or gateway. Before proceeding, verify that the SMTP service
or gateway has been installed on the other voice messaging server.
To Verify Network Connectivity with the Remote Voice Messaging Server
Step 1 On the Exchange (or relay) server that handles outgoing SMTP messages, open a command prompt
window.
Step 2 Enter ping <IP address>, where <IP address> is the IP address of the remote voice messaging server.
If you receive no reply, troubleshoot the network connectivity problem until the problem is resolved.
Then continue with Step 3.
Step 3 Enter ping <Domain name> where <Domain name> is the domain name that will be used to address
messages to the remote voice messaging server. The domain name in this step is the domain name that
will be entered on the VPIM delivery location page in the Cisco Unity Administrator when setting up
VPIM Networking.