Office Administrator - Messaging/O365 & Cisco Email Security
Chennai, Tamil Nadu, India · Full Time
Be the first to apply
- Experience
- 4–8 yrs
- Salary
- —
- Openings
- 1
- Posted
- 3 दिवसपूर्वी
- Work mode
- In office
- Resume
- Required to apply
Where you'll work
Sign in to tell us what does and doesn't work for you here — it sharpens every match we show you.
Job description
About the Role
This position involves managing Microsoft 365 Messaging environments alongside Cisco Email Security systems, in a full-time onsite role located in Chennai. Candidates will be involved in administering, migrating, securing, and supporting email infrastructures within a global enterprise environment.
Key Responsibilities
- Administer Microsoft 365 Messaging services including Exchange Online, Exchange Hybrid, and Exchange Server 2019 environments.
- Manage mailbox lifecycle, mail flow, transport rules, SMTP relays, and conduct message tracing.
- Operate and maintain Cisco Email Security Appliance (ESA) and Cisco Cloud Email Security (CES) technologies.
- Lead Cisco ESA to CES migration projects encompassing planning, assessment, policy transfer, mail flow redesign, implementation, testing, and post-migration support.
- Maintain comprehensive knowledge of email security protocols and infrastructure elements such as SMTP, DNS, SPF, DKIM, DMARC, TLS, MX Records, and Autodiscover.
- Oversee Microsoft Entra ID (Azure AD), Azure AD Connect, ADFS, SSO, MFA, Conditional Access, and overall identity management solutions.
- Administer collaborative tools including Microsoft Teams, OneDrive for Business, SharePoint Online.
- Manage Microsoft Defender for Office 365 and other email threat protection platforms.
- Utilize Microsoft Purview Compliance Portal services including Data Loss Prevention (DLP), eDiscovery, Retention Policies, Content Search, and compliance management.
- Handle incident, problem, and change management activities, including root cause analysis, specifically for critical priority incidents in a global enterprise setting.
- Develop and use PowerShell scripts and Exchange Online PowerShell to automate administrative processes.
- Employ Microsoft Graph API for automation and administrative purposes.
- Diagnose and troubleshoot mail routing, delivery challenges, phishing, spoofing, and other mail security incidents.
Additional Information
A walk-in recruitment drive is scheduled for August 8, 2026, at Tata Consultancy Services located in SIPCOT Information Technology Park, Navalur Post, Siruseri, Chennai, Tamil Nadu, 603103.