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When registering domains to the Trend Micro Email Encryption Server, messages are sent to the following email addresses to verify ownership of the domains:
  • postmaster@<domain>
  • webmaster@<domain>
  • the email address returned from a WHOIS lookup for the domain
WARNING
WARNING
The postmaster and webmaster accounts must exist and be enabled before domains can be registered.
Trend Micro sends a message to the "Contact Information" email address to verify that the domain exists and that the postmaster@<domain> and webmaster@<domain> accounts exist and are enabled.
WARNING
WARNING
One of the following must respond to the verification message:
  • postmaster@<domain>
  • webmaster@<domain>
  • the email address returned from a WHOIS lookup for the domain
By design, after a domain is registered, it cannot be re-registered. If a domain has already been registered, subsequent re-registration results in a "domain already registered" error. This is enforced for the purpose of security. If there is a need to reinstall IMSS, backup the database prior to re-installation, and restore it afterwards. This eliminates the need to re-register IMSS and the same domains after re-installation.
Note
Note
IMSS must be registered to the encryption service before any domains can be registered.
The default sender address for your domains will be postmaster@<domain>. You can customize the default sender address from the Encryption Settings screen.
The default sender address is used when IMSS tries to encrypt a message, but whose domain is not in the Domain List. IMSS signs these messages with the default sender address.

Registering Domains to the Encryption Service Parent topic

Procedure

  1. Go to the Policy → Encryption Settings screen.
  2. Click the Domain tab.
  3. Click Add.
  4. Add the domains you want to protect to the domain list.
    Domains can be manually typed or selected from a list of existing domains. Up to 10 domains can be added at a time.
    Note
    Note
    Domains and their sub-domains are treated as unique entries. Sub-domains must be added separately to the domain list.
    Wildcards cannot be used to include sub-domains.
    LDAP groups (entries starting with" LDAP") cannot be added to the domain list.
  5. Click Save.
    A progress bar appears as the domain information is sent to the Trend Micro Email Encryption Server. A confirmation screen appears that verifies the domain information was received by the Trend Micro Encryption Server.
  6. Read the instructions about what to do once you receive the verification key file.
  7. Click Done.
    The domains appear in the Domain list on the Domain tab and a message about the Domain tab.
  8. If you are the registered owner of the domain, reply to the confirmation message from the Trend Micro Encryption Server. The message is sent to postmaster@<domain> and webmaster@<domain>. When your domains are approved, you receive the domain ownership verification key file. You must reply to the confirmation message to prove that you are the owner of the domain.
    Note
    Note
    It may take one or two working days before you receive the key file to register the domain(s) to the encryption service. A key file is sent for each domain that is registered.
    If you do not receive a message within 3 working days, contact your sales representative.
  9. Once you receive the key file, save it to a secure location.
  10. Go to the Encryption Settings screen.
  11. Click Browse and locate the key.
  12. Click Upload.
    A confirmation message appears when registration completes successfully.
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