Job DescriptionWalk In Drive on 08-Aug-2026 at Chennai , Tata Consultancy Services, SIPCOT Information Technology Park, Navalur Post, Siruseri, Chennai, Tamil Nadu, 603103.
nRole: Messaging/O365 - Cisco E-mail Security Appliance
nExperience: 4 to 8 Years
nLocation: Chennai
nMust-Have
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- Solid experience in Microsoft 365 Messaging Administration, including Exchange Online, Exchange Hybrid, and Exchange Server 2019.n
- Hands-on experience administering and supporting Microsoft Exchange Online, mailbox lifecycle management, mail flow, transport rules, SMTP relays, and message tracing.n
- Extensive experience managing Cisco Email Security Appliance (ESA) and Cisco Cloud Email Security (CES) platforms.n
- Proven experience in Cisco ESA to CES migration projects, including planning, assessment, policy migration, mail flow redesign, implementation, testing, validation, and post-migration support.n
- Strong knowledge of Email Security and Messaging Infrastructure, including SMTP, DNS, SPF, DKIM, DMARC, TLS, MX Records, and Autodiscover.n




- Hands-on experience with Microsoft Entra ID (Azure AD), Azure AD Connect, ADFS, SSO, MFA, Conditional Access, and Identity Management.n
- Experience with Microsoft Teams, OneDrive for Business, SharePoint Online, and Collaboration Services Administration.n
- Experience administering Microsoft Defender for Office 365 and email threat protection solutions.n
- Experience with Microsoft Purview Compliance Portal, DLP, eDiscovery, Retention Policies, Content Search, and Compliance Management.n
- Strong background in Incident Management, Problem Management, Change Management, and Root Cause Analysis (RCA).n
- Experience supporting P1/P2 critical incidents in a global enterprise environment.n
- Hands-on experience working with PowerShell scripting and Exchange Online PowerShell for automation and administration.n
- Experience using Microsoft Graph API for automation and administrative tasks.n
- Experience managing and tr

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