Florian Götzl

IT Freelancer | Senior Cloud & Infrastructure Engineer | Email Infrastructure & SMTP

I am a Senior Microsoft 365 Infrastructure Specialist with a strong focus on email infrastructure, mail routing, and email security.

I help organizations design, optimize, and document their email environments, ensuring reliable and secure mail delivery across complex infrastructures.

My expertise includes Microsoft 365, Exchange Online Protection (EOP), Microsoft Defender for Office 365, and the integration of third-party email security solutions, as well as SMTP infrastructures operating outside the Microsoft 365 cloud.

A key area of my work is email authentication and transport security, including SPF, DKIM, DMARC, DANE, and MTA-STS, as well as the required DNS architecture and configuration.

With over 20 years of hands-on experience across a wide range of environments, I have implemented and maintained numerous mail routing architectures and gateway-based mail flows.

I support organizations with the planning, implementation, troubleshooting, and optimization of their email infrastructure.

My work is vendor-independent, aligned with current industry best practices, and always clearly documented.

Serving as Tekniskt IT-Strateg, advising on cloud and infrastructure strategy for multiple customers in Europe – Driving M365 initiatives, email security hardening and SMTP infrastructure optimisation – Stakeholder coordination across cross-functional IT and business teams – Technical expertise and deployment on various projects for different customers

As a Senior MS Exchange Engineer, I helped the customer to develope their Exchange Online environment, both in infrastructure and operations.

Key features:

- Compliance (DLP, Data Retention, Purview)

- Mail Infrastructure¨

- Defender Suite

Also, developed and enhanced the SMTP infrastructure besides the EXO environment.

Key features:

- Migration from Proofpoint to Cisco CES Ironport

- Key hygiene Postfix

- Decomission of old mail infrastructure, internal/external DNS, hostnames

- Hardend the solution

- Development and architecture for >100 domains SPF/DKIM/DMARC