1. Post Name: Lead IT Infra Maintenance
2. Job Description:
i. Managing on premises Zimbra Email Setup with secure Cisco Email Gateway for NPCI domain.
ii. Managing Active Directory.
iii. Administration of Internet DNS server on open source.
iv. Administration of security device Ironport and Thread Grid (AMP).
3. Major Accountabilities / Activities:
i. Email Solution: Ensures email uptime for NPCI users & all SMTP application in order to keep NPCI business moving. Protect the NPCI MX email gateway from spam, cyber threats, malware, ransomware, spoofing and phishing attack. Secure NPCI email domain with enhancing email security protocol by stopping sender fraud with SPF, DKIM and DMARC. All Incoming & Outgoing clean mail accept and is deemed to be virus and spam free to avoid NPCI IP blacklist. NPCI Email Solution Integrated with Ironport and Active Directory for seamless mail delivery. Proactively reviews and resolves escalated call.
ii. Active Directory (AD): Maintaining 10 internal AD servers with DHCP & DNS services. Replication the all AD servers for synchronization, net logon, time services, FSMO roles, schema, NTDS database partitions and DNS settings. AD health check-up & identify resource bottlenecks, troubleshooting and resolving problems. Installing patches & software upgrade to close audit observation. Creation scripting to avoid the manually error. DNS zone / Delegation creation and deletion on location AD servers
iii. Open Source: Ensuring uptime NPCI public DNS. Maintaining NPCI sub-domain record types NS, A, MX, TXT, CMANE, SRV, PTR.. etc for quick response. NPCI Public DNS application is running at three DC locations on Linux Bind with free software. Upgrade the Linux OS and Bind application to closing audit points related to Public DNS servers. Weekly backup with script of NPCI DNS public Zone files.
Monitoring from cache poisoning attack and protect DNS server with safe & secure connection. All NPCI subdomains FQDN seamless queries resolve for external world by authoritative on premise NPCI DNS servers.
iv. Ironport: Prevent from Graymail, Bulk and Marketing messages to deliver clean message. Monitor IronPort health device, performance, usage, as well as network availability and latency, while continuously testing and troubleshooting the messaging. Regular email security appliance to latest major release Async OS version. Administrator and maintain Thread Grid (TG) application for internal mail malware scan. Create the policy as per the requirement.
4. Desired Candidate Profile: Education: UG: B.Tech/B.E. – Any Specialization, PG:MCA – Computers, M.Tech – Any Specialization