Stefan Wey

Exchange Online to Block Exchange Web Services (EWS) requests - Alweys C//oud Ensure that your cloud is always oriented the right way! by Stefan Wey

Is your organization relying on 𝗘𝘅𝗰𝗵𝗮𝗻𝗴𝗲 𝗪𝗲𝗯 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 (𝗘𝗪𝗦)?

Starting 𝗢𝗰𝘁𝗼𝗯𝗲𝗿 𝟭, 𝟮𝟬𝟮𝟲, requests will be blocked.

If your apps or integrations depend on EWS, it's time to plan the 𝗺𝗼𝘃𝗲 𝘁𝗼 𝘀𝘂𝗽𝗽𝗼𝗿𝘁𝗲𝗱 𝗮𝗹𝘁𝗲𝗿𝗻𝗮𝘁𝗶𝘃𝗲𝘀.

www.alweys.ch/blog/2025/05/05...

#ExchangeOnline #Microsoft365 #EWS #Calendar

Send E-Mails with PowerShell using Modern Auth. (OAuth) - Alweys C//oud Ensure that your cloud is always oriented the right way! by Stefan Wey

Still using 𝗦𝗲𝗻𝗱-𝗠𝗮𝗶𝗹𝗠𝗲𝘀𝘀𝗮𝗴𝗲 with Basic Auth.?

This PowerShell module helps you transition to Modern Authentication:

  • Translates 𝗦𝗲𝗻𝗱-𝗠𝗮𝗶𝗹𝗠𝗲𝘀𝘀𝗮𝗴𝗲 to Microsoft Graph
  • Supports SMTP with OAuth2 (SASL XOAUTH2)

www.alweys.ch/blog/2025/04/03...

#PowerShell #ModernAuth #OAuth #Microsoft365

I would say a multi-tenant app or/and a workflow which integrates into a secret's manager, but as far as I know there is no guide available yet.

Managed Conditional Access Policy - Alweys C//oud Ensure that your cloud is always oriented the right way! by Stefan Wey

Microsoft Entra ID is enhancing 𝗠𝗮𝗻𝗮𝗴𝗲𝗱 𝗖𝗼𝗻𝗱𝗶𝘁𝗶𝗼𝗻𝗮𝗹 𝗔𝗰𝗰𝗲𝘀𝘀 𝗣𝗼𝗹𝗶𝗰𝗶𝗲𝘀. Starting February 2025, 𝗱𝗲𝘃𝗶𝗰𝗲 𝗰𝗼𝗱𝗲 𝗳𝗹𝗼𝘄 & 𝗹𝗲𝗴𝗮𝗰𝘆 𝗮𝘂𝘁𝗵𝗲𝗻𝘁𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝘄𝗶𝗹𝗹 𝗯𝗲 𝗯𝗹𝗼𝗰𝗸𝗲𝗱 after a 45-day trial. Review your sign-in logs and prepare for changes.

#MicrosoftEntra #ConditionalAccess

www.alweys.ch/blog/2025/03/10...

Prepared for Exchange Server SE?

Slides: www.alweys.ch/blog/files/2...

Exchange Server CU15: Ready for Action! (2025 H1 + WS2025) - Alweys C//oud Ensure that your cloud is always oriented the right way! by Stefan Wey

𝗘𝘅𝗰𝗵𝗮𝗻𝗴𝗲 𝗦𝗲𝗿𝘃𝗲𝗿 𝗖𝗨𝟭𝟱 is here! With 𝘞𝘪𝘯𝘥𝘰𝘸𝘴 𝘚𝘦𝘳𝘷𝘦𝘳 2025 𝘴𝘶𝘱𝘱𝘰𝘳𝘵, partial TLS 1.3 & more, CU15 𝘴𝘦𝘵𝘴 𝘵𝘩𝘦 𝘴𝘵𝘢𝘨𝘦 𝘧𝘰𝘳 𝘌𝘹𝘤𝘩𝘢𝘯𝘨𝘦 𝘚𝘦𝘳𝘷𝘦𝘳 𝘚𝘌 (2025 H2). Upgrade now to secure long-term support.

#CU15 #ExchangeServer #WindowsServer2025

www.alweys.ch/blog/2025/02/11...

I built a local version of Maester today to make use of @stefanwey.bsky.social's ⭐ PR that adds support for #M365 government SKU detection.

Learning how to navigate GitHub and build projects locally is essential if you rely on open source #PowerShell modules. Feel free to ask if you want to learn!

Almost 10,000 tenants have used Maester since the v1 release in December 💚

We also hit a milestone of 1000 tenants using Maester daily to stay on top of their security config.

THANK YOU!!

Exploring ExchangeOnlineManagement 3.7.0: Features and Changes - Alweys C//oud Ensure that your cloud is always oriented the right way! by Stefan Wey

ExchangeOnlineManagement 𝟯.𝟳.𝟬 adds extended 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 𝘁𝗿𝗮𝗰𝗲 𝗵𝗶𝘀𝘁𝗼𝗿𝘆, optional help file loading, and 𝗜𝗣𝘃𝟲 𝘀𝘂𝗽𝗽𝗼𝗿𝘁 for inbound mail. Plus, the external 𝗿𝗲𝗰𝗶𝗽𝗶𝗲𝗻𝘁 𝗿𝗮𝘁𝗲 𝗹𝗶𝗺𝗶𝘁 rollout is delayed, giving admins more time to prepare.

#ExchangeOnline #PowerShell

www.alweys.ch/blog/2025/01/19...

Transition to New Outlook (or Opt-out) - Alweys C//oud Ensure that your cloud is always oriented the right way! by Stefan Wey

The 𝗡𝗲𝘄 𝗢𝘂𝘁𝗹𝗼𝗼𝗸 for Windows launches 𝟬𝟲.𝟬𝟭.𝟮𝟬𝟮𝟱 for Microsoft 365 Business users, with Enterprise migration in 2026. It promises 10–20% fewer incidents. Learn about timelines, deployment prep, rollout stages, 𝗼𝗽𝘁-𝗼𝘂𝘁 𝗼𝗽𝘁𝗶𝗼𝗻𝘀, and transition tips.

#NewOutlook #Outlook #Microsoft365 #ExchangeOnline