Figure 5: Using Nslookup with the string -q=a to verify that the MX server has a valid external IP address

Figure 5: Using Nslookup with the string -q=a to verify that the MX server has a valid external IP address

C:\>nslookup -q=a mail.TheEssentialExchange.com

Server: win2k3r2ee.essential.local

Address: 192.168.1.10

Non-authoritative answer:

Name: mail.TheEssentialExchange.com

Address: 64.202.166.12

C:\>