Practical Graph: Analyzing External Meeting Participants for Teams Meetings
A reader asked if it's possible to analyze the external meeting participants for Teams online events. The information is available through the Events Graph API, and some PowerShell code written using the Graph PowerShell SDK quickly extracts events to analyze and determine the set of external domains meeting participants come from. https://practical365.com/external-meeting-participants-analysis/
Unable to whitelist quarantined emails
We have an email that is being constantly quarantined from a webform. The email comes from the email of the web form server, but is spoofing an internal address in our tenant by design. The email keeps getting blocked, and nothing we've tried as far as transport rules, whitelist additions, etc has been able to discernably affect this. There is a option to create a tenant allow list entry but the maximum duration is 45 days. We need a way to reliably whitelist an email indefinitely.
SPF, DKIM and DMARC bypassed for guest users
I manage a small non-profit using Microsoft 365 Business Basic. Most of the people on our board of directors are added as unlicensed guest users so that they can participate in Teams chats and meetings and to access our Sharepoint without using up a license. The problem: any email sent from an internal licensed user (or shared mailbox) to one of these guest users completely bypasses our domain's SPF, DKIM and DMARC configuration, resulting in bounced emails (particularly for recipients using gmail). Mail sent from an internal licensed user to any external address NOT registered as a guest user correctly passes SPF, DKIM and DMARC checks. I gather that this is because guest users are viewed as "internal" despite having external email addresses, but it seems like a serious limitation if I cannot reliably send email to anyone who is a guest user. Is there any extra configuration I can do to enable SPF, DKIM and DMARC for email to guest users?Removing Obsolete Mobile Device Partnerships from Exchange Online
This article discusses how to use PowerShell to find obsolete mobile device partnerships in Exchange Online (or Exchange Server) and remove the obsolete devices. Users won’t be able to remove obsolete mobile devices after the settings to manage mobile devices are removed from OWA and the New Outlook, so cleaning up the mess is the responsibility of administrators (like it usually always is). https://office365itpros.com/2025/08/20/obsolete-mobile-device-cleanup/Creating Groups in Exchange Online and SharePoint Online A Unified Collaboration Experience
Modern workplaces thrive on collaboration, and Microsoft 365 offers powerful tools to foster it. One of the foundational pillars of this collaboration is Microsoft 365 Groups, which seamlessly integrates Exchange Online and SharePoint Online to deliver a unified experience across communication and content sharing. In this blog, we’ll explore how to create groups in Exchange Online and SharePoint Online, how they interconnect, and best practices to manage them efficiently. https://dellenny.com/creating-groups-in-exchange-online-and-sharepoint-online-a-unified-collaboration-experience/Any Work arounds for not being able to share mailboxes across Multi-Tenant Organizations?
Hi, Multi-Tenant Organizations make a lot of things fairly seamless, but you can't have a shared mailbox that is shared to users in two tenants within the organization. Which is a bit of a problem because I have a situation where that would be the ideal solution. So does anybody have suggestions for the next best thing?Arcihtekt M365 // Ogłoszenie pracy
Kim jesteśmy? Technologia to nasza pasja, ale nie tylko! Wspieramy inicjatywy społeczne, ekologiczne i promujące aktywny styl życia. Jesteśmy laureatem prestiżowych nagród posiadamy certyfikat Great Place to Work, a na co dzień współpracujemy z globalnymi liderami IT - VMware, Fortinet, IBM, HPE, Dell, Hitachi, Microsoft, AWS. Nasz zespół tworzą utalentowani inżynierowie i doświadczeni architekci IT. Dołącz do nas i zostań częścią #ITSFteam! Kogo szukamy? Arhitekta M365, który dołączy do naszego zespołu i będzie odpowiedzialny za projektowanie, wdrażanie oraz zarządzanie rozwiązaniami opartymi na Microsoft 365. Idealny kandydat to osoba z doświadczeniem w architekturze chmurowych rozwiązań Microsoft, posiadająca umiejętność kompleksowego projektowania i optymalizacji procesów w obrębie aplikacji i usług M365, takich jak Teams, Sharepoint, Exchange Online, OneDrive, Power Platform czy Microsoft 365 Copilot. Warto od razu zaznaczyć, będzie to praca w modelu hybrydowym 4/1 w Warszawie. Co oferujemy? Współpaca bezpośrednio z nami na okres długofalowy (5+ lat); Możliwość rozwoju przy pracach dla największych klientów Enterprise w całym kraju; Pakiet medyczny Medicover; Karta Multisport; Program PPK; Lekcje angielskiego; Dodatkowy dzień urlopu z okazji urodzin; Około 8 integracji frmowych w roku :) Jeśli propozycja brzmi interesująco i chciałbyś poznać więcej szczegółów na temat wymagań, bądź zakresu obowiązków — to śmiało aplikuj przez link niżej: https://itsf.traffit.com/public/an/0ed08bcedcd522af2936290b48d33a9e48697565
Adding Outlook add-ins and permissions
Wonderoig if someone can answer a question for me. I'll use the process in this link as context https://help.draftable.com/hc/en-us/articles/46382047949977-Configuring-Redline-in-Email-Outlook-with-Draftable In short when adding an Outlook Addin and selecting a group to assign the add-in too and the accepting the permission requests does this: Apply the permissions to ONLY those nominated users' mailboxes; or Applies the permissions to ALL mailboxes and applies "security" by limiting the users who can see the add-in I assume it does one of the two. Any ideas?Unlocking Efficiency with Microsoft 365 Archive A Smart Way to Manage Mailbox Storage
As organizations grow and communication becomes increasingly digital, managing email data efficiently becomes a top priority. Microsoft 365 offers a powerful yet often underutilized feature to address this challenge — the Microsoft 365 Archive, also known as In-Place Archive or Online Archive. In this blog, we’ll explore what the Archive feature is, how it works, its benefits for users and IT administrators, and best practices for making the most out of it. https://dellenny.com/unlocking-efficiency-with-microsoft-365-archive-a-smart-way-to-manage-mailbox-storage/
