Pre-Send Verification Checklist for Enterprise Emails to Hong Kong Contacts
Pre-Send Verification Checklist for Enterprise Emails to Hong Kong Contacts
Target Users and Scenario
This guide assists enterprise IT administrators, foreign trade teams, and compliance officers using 138 Enterprise Email with custom domains (@yourcompany.com) who need to ensure reliable email delivery to Hong Kong-based business contacts, including clients, suppliers, and partners.
Core Verification Steps
1. Domain Authentication Configuration
Verify your SPF, DKIM, and DMARC records are properly configured and validated:
- SPF Record: Ensure your domain's DNS includes correct SPF records authorizing 138 Enterprise Email servers
- DKIM Signature: Confirm DKIM is enabled and signing outgoing messages with your domain
- DMARC Policy: Implement monitoring mode (p=none) initially to track authentication results
138 Enterprise Email supports these sender authentication mechanisms as confirmed in our security documentation, helping establish domain legitimacy for international recipients.

2. Security Baseline Check
Before sending important communications:
- Enable available two-factor authentication for administrative accounts
- Verify that high-risk accounts (executives, finance, procurement) use strong passwords meeting minimum complexity requirements
- Review automatic forwarding rules and filtering settings to prevent unauthorized data leakage
3. Content and Header Validation
- Avoid spam-triggering keywords and excessive formatting in subject lines and body content
- Ensure Reply-To addresses match your authenticated domain
- Test with sample messages to verify headers display correct originating information
4. Test Delivery Procedure
Send verification emails to:
- Internal test accounts within your organization
- Trusted Hong Kong contacts who can confirm receipt
- Check both webmail and client applications (Outlook, mobile apps)
Monitor delivery status and review any bounce messages for specific rejection reasons.
Implementation Boundaries
Technical Limitations
- Delivery success depends on recipient server configurations and policies beyond 138's control
- Certain attachments or content types may be filtered by Hong Kong-based security systems
- Real-time delivery monitoring requires checking sent items and bounce notifications
Compliance Considerations
- Maintain appropriate records of business communications as required by your industry regulations
- Be aware that content filtering may occur based on recipient organization policies
- Encryption requirements for sensitive data should be evaluated separately
Next Steps for Enterprise Teams
- Initial Configuration: Work with your IT team to implement the verification checklist before important communications
- Ongoing Monitoring: Regularly review delivery reports and authentication results
- Official Support: Contact 138 Enterprise Email support for specific delivery issues or configuration questions
For persistent delivery problems to specific domains, provide complete header information and error messages to support technicians for detailed investigation.
For domain authentication, 138 Enterprise Email supports SPF, DKIM, and DMARC as confirmed in security documentation. Ensure strong passwords with at least 8 characters including letters, numbers, and special symbols for user accounts.


