Syed Irfan Ahmed

Canadian National Railways (CN Rail) - Hyderabad:

• Defined process and governance related to security and compliance in M365.
• Proposed and implemented various service improvement plans to optimize operations.
• Performed various cleanup activities resulting in cost optimization (e.g., license cleanup, unused Yammer/M365 groups).
• Identified and developed future M365 strategies with customer.
• Implemented Exchange/O365 configurations through change requests.
• Contributed to the resolution of aged and priority incidents, driving closure within defined SLAs.

A.P. Moller Maersk Global Services - Pune:

• Managed mailboxes with periodic checks (utilization, archive state) to prevent future issues.
• Created dynamic distribution lists based on business requirements.
• Complied with new features and addressed action items via O365 message center.
• Configured and managed SendGrid and Postfix relay services in Azure.
• Assisted with application mail flow issues related to relay services.
• Registered applications in Azure and managed API permissions.
• Renewed secret keys for registered applications in Azure.
• Managed whitelisting, blacklisting for IPs, domains, and senders in Defender.
• Configured SafeLink and Safe Attachments policies.
• Configured Anti-spam, Anti-Malware policies in Defender.
• Managed spam and quarantined mail issues.
• Registered and completed environment risks in a timely manner.
• Resolved Azure AD Connect sync issues with objects.
• Possess good knowledge on Azure AD connect configurations and settings and underwent corporate training on the same.
• Created retention policies and tags under the compliance portal.
• Proposed and implemented backup solutions like Litigation Hold, Retention Hold and E-discovery hold.
• Developed and assigned various Teams permission policies to end users based on business requirements.
• Resolved Teams application-related end-user issues.
• Collaborated with vendors to resolve backend issues.
• Utilized "Aternity" tool to identify improvement areas in end-user applications (M365 applications).
• Resolved various OneDrive issues for end users.
• Created SharePoint sites (Team site and Communication) and managed permissions.
• Assisted in restoring deleted items and deleted sites from SPO.
• Responsible for managing DNS records (DMARC/DKIM, SPF, TXT).
• Performed various recipient management tasks in Exchange server including creating different recipients (mailboxes, groups, contacts) and applying relevant policies and restrictions.
• Performed various administrative tasks and configurations through the Exchange Management Console (EMC).
• Resolved sync issues by correcting AD attributes related to Exchange.
• Conducted database movement of mailboxes in Exchange server.
• Managed disk space on Exchange servers.
• Applied cumulative updates to Exchange servers.
• Implemented security and periodic patch updates to prevent vulnerabilities in Exchange.
• Renewed 3rd party and self-signed certificates on Exchange Servers before expiry.
• Conducted white space cleanup activity on Exchange server databases.
• Decommissioned Exchange servers.

A.P. Moller Maersk - Chennai:

• Handled mail flow issues in O365 and Exchange.
• Managed mailbox provisioning issues in O365.
• Adjusted AD attributes and parameters for cloud sync.
• Conducted content and e-discovery searches for legal issues.
• Resolved meeting, calendar delegate, and room mailbox configuration issues.
• Handled Skype for Business/Lync-related issues.
• Addressed Outlook/webmail related end-user issues.

Microsoft - Chennai:

• Executed PowerShell commands for O365 configuration changes.
• Configured hybrid setups of O365 with Exchange servers.
• Resolved Autodiscover and free/busy issues in hybrid setups.
• Managed mail flow issues in hybrid setups and relay services.
• Conducted Cutover, Staged, and Hybrid migrations for O365.
• Assisted with security settings, policies and configurations in EOP.
• Managed O365 message encryption issues.
• Set up DLP policies for customers..

Belkin - Chennai:

• Configured SOHO routers for various connection types (Cable, DSL, PPOE).
• Configured modem-cum-router based on ISP connection types.
• Resolved wireless issues and set up security (WEP, WPA-PSK).
• Configured access points and range extenders.