Job Description

Design, implement and validate the Mimecast outbound mail flow.

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Review outbound routing, controls, policies, authentication and delivery behaviour.

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Identify and close gaps across data protection, malware, impersonation, URL and policy enforcement controls.

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Troubleshoot mail flow issues across Mimecast, Microsoft 365 and downstream or third party systems.

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Support testing, cutover planning, monitoring and rollback readiness.

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Map current Trend Micro email security capabilities, integrations, dependencies and traffic flows.

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Define the migration and decommissioning sequence in coordination with the Mimecast target state.

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Remove or retire legacy configurations, rules and integrations safely.

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Validate that required protection and mail flow outcomes remain in place after each change.

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Support defect resolution, rollback planning, evidence capture and final closure of the decommissioning work.

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Key responsibilities

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Execute configuration and engineering changes in a controlled manner.

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Coordinate testing with technical teams and business stakeholders.

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Develop runbooks, technical procedures, support models and knowledge transfer materials.

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Monitor post change outcomes and recommend further tuning.

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Escalate issues early and drive actions through to completion.

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Strong hands on experience administering and engineering Email Security.

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Demonstrated experience with outbound email security and enterprise mail flow troubleshooting.

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Practical experience implementing email journaling and validating message coverage.

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Experience uplifting email security policies and managing controlled exceptions.

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Experience with Microsoft 365 / Exchange Online mail flow, connectors, transport rules and message tracing.

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Experience retiring or migrating legacy email security platforms, preferably Trend Micro.

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Working knowledge of SPF, DKIM, DMARC, SMTP, DNS and email authentication.

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Ability to produce transparent technical documentation and operational handover material.

📌 Associate Security Consultant (New South Wales)
🏢 CareCone Group
📍 New South Wales