Registered HES users should redirect their MX records to HES to ensure that mails are intercepted and scanned by the service. The MX record determines the message routing for all emails sent to your domain. To route messages destined for your domain through the HES servers, you need to redirect your MX record, which is part of your DNS record.

The actual redirection of the MX record involves changing the IP address for all inbound SMTP traffic. This is typically accomplished manually (for self-managed smaller accounts), or through a support technician. If you are unsure how to configure the MX records for your domain, contact your Internet Service Provider's (ISP) helpdesk or your Domain Name Service (DNS) technician for assistance.

However, MX record pointing to Hosted Email Security must first be set to a HIGHER NUMBER to avoid interruption of emails while the domain is “Adding”. And when domain was changed to “Activated”, you can now set the MX record priority to a LOWER NUMBER or delete the old mx record you have.

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 The MX records for HES version 2.0/3.0 are the following:

• EMEA: in.hes.trendmicro.eu
• Non-EMEA: in.hes.trendmicro.com