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Getting Started Guide Installation for SMTP Servers  89
Verify that MX record has been successfully updated
To verify whether MX record is updated do as follows:
1. Click Start ► Run and type in Command
2. From the command prompt type in: nslookup
3. Type in: set type=mx
4. Specify your mail domain name.
The MX record should return the IP addresses of the mail relay
servers.
Screenshot 74 - Checking the MX record of your domain
Step 7: Test your new mail relay server
Before proceeding to install GFI MailEssentials, verify that your new
mail relay server is working correctly by doing as follows:
Test IIS SMTP inbound connection via test email
1. Send an email from an „external‟ account (e.g. Gmail) to an internal
email address/user.
2. Ensure that intended recipient received the test email in the
respective email client.
Test IIS SMTP outbound connection via test email
1. Send an email from an „internal‟ email account to an external
account (e.g. Gmail).
2. Ensure that the intended recipient/external user received the test
email.
NOTE: You can also use „Telnet‟ to manually send the test email and
obtained more troubleshooting information. For more information refer
to:
http://support.microsoft.com/support/kb/articles/Q153/1/19.asp
6.4.2 Upgrade from earlier version
If you are currently using a previous version of GFI MailEssentials
(versions 9, 10, 11, 12 and 14), you can upgrade your current
installation while at the same time retain all your existing configuration
settings.
Important notes
 Upgrades cannot be undone i.e. you cannot downgrade to an