Position

O365 / Messaging & Exchange Administrator (4-8YR)

Job Summary

We are looking for an experienced O365 / Messaging & Exchange qualified to provide L2/L3 administration, support, engineering, monitoring, troubleshooting, and lifecycle management across Microsoft 365, Exchange Online, Exchange On-Premises, and Exchange Hybrid environments. The role will also support messaging security, compliance, disaster recovery, business continuity, and related collaboration services.

Key Responsibilities

Messaging Administration & Support

· Provide L2/L3 support for Microsoft 365, Exchange Online, Exchange On-Premises, and Exchange Hybrid environments.

· Manage mailboxes, distribution groups, shared mailboxes, resource mailboxes, and collaboration services.

· Handle mailbox provisioning, migrations, decommissioning, public folder management, and directory integrations.

· Support email, calendaring, Teams, SharePoint, and messaging-related applications.

Monitoring & Incident Management

· Monitor messaging infrastructure health, performance, and availability.

· Manage incidents, service requests, problem tickets, and escalations through ITSM tools.

· Perform proactive troubleshooting, root cause analysis, and service restoration.

· Support capacity planning, performance tuning, and service optimization.

· Support Disaster Recovery (DR) and failover processes.

· Build and configure Exchange environments; experience in this area is an added advantage.

· Administer Exchange On-Premises, Exchange Online, ADFS, Directory Synchronization, DAG configurations, load balancing, FIM, and related component roadmaps.

· Manage end-to-end Exchange infrastructure and maintain infrastructure hygiene.

Security, Compliance & Governance

· Ensure compliance with corporate security policies, SOX controls, audit requirements,



and access governance standards.

· Manage role-based access controls, privileged account reviews, and audit reporting.

· Support email security, encryption, authentication, spam protection, and secure mail flow using TLS.

Messaging Engineering & Operations

· Install, maintain, upgrade, and support messaging infrastructure and software.

· Execute messaging platform changes, testing, deployments, and lifecycle management activities.

· Support mail routing, SMTP gateways, spam filtering, and messaging integrations.

· Maintain technical documentation, SOPs, runbooks, and knowledge base articles.

Vendor & Third-Party Tool Management

· Manage Microsoft support cases and coordinate with vendors for issue resolution.

· Support and administer Venafi (Certificate Management), One Identity (Dynamic Distribution Lists), PartnerNet (Secure Email Connectivity), Poppulo, and ManageEngine.

· Track vendor roadmaps and implement required platform enhancements.

Backup, Recovery & Business Continuity

· Support mailbox-level recovery, retention, and archival processes.

· Coordinate with Backup SME teams for backup schedules and restoration requests.

· Participate in Disaster Recovery (DR) and Business Continuity (BCP) testing.

· Support data recovery, compliance searches, and audit requests.

Required Skills

· Microsoft 365 Administration

· Exchange Online & Exchange Hybrid

· Exchange Server (On-Premises)

· Microsoft Teams & SharePoint Online

· Microsoft Entra ID (Azure AD)

· PowerShell Scripting

· SMTP, DNS, SPF, DKIM, and DMARC

· Email Security & Compliance

· TLS & Secure Mail Routing

· Windows Server & Active Directory

· ServiceNow or other ITSM tools

Role Details

Primary Skill

O365, Messaging & Exchange

Locations

Pune / Bangalore / Hyderabad / Chennai / Kolkata

Notice Period

Short Joiners

Support Level

L2 / L3

📌 / MESSAGING & EXCHANGE (4-8yr) (Bengaluru)
🏢 Nasugroup.com
📍 Bengaluru