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22  Installation for Microsoft Exchange 2003 Getting Started Guide
6. Select SMTP and click OK.
7. Click OK to finalize your configuration. All emails will now be
forwarded to the GFI MailEssentials server.
Step 6: Update your domain MX record to point to mail relay
server
Update the MX record of your domain to point to the IP of the new
mail relay server. If your DNS server is managed by your ISP, ask
your ISP to update the MX record for you.
If MX record is not updated all emails will be routed directly to your
email server - hence by-pass GFI MailEssentials anti spam filters.
Verify that MX record has been successfully updated
To verify whether MX record is updated do as follows:
1. Click Start ► Run and type: 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 17 - 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