Enabling Better Mail Flow Security for Exchange Online
At Microsoft Ignite 2020, Microsoft announced support for MTA-STS, or Mail Transfer Agent Strict Transport Security. This is covered in RFC 8461 and it includes making TLS for mail flow to your domains...
View ArticleMicrosoft 365 From A Raspberry Pi 400 Personal Computer
So my new computer arrived today, its a keyboard and a few cables, and as my first computer was a ZX Spectrum when I was 14, this brings back a few memories. But, is it usable today with services such...
View ArticleExchange Online Warning On Receipt Of New Email Sender
Released recently to no fanfare at all, Microsoft now has a SafetyTip that appears if you receive email from a first time recipient. Most often phish emails will come from an address you have never...
View ArticleWhy Do Comments In Microsoft 365 Planner Disappear?
So first you need an Exchange Online mailbox for comments to work. Comments to the tasks of Plans are stored in the Microsoft 365 Group mailbox, and you need an Exchange Online mailbox to access the...
View ArticleUnable To Update Defender Preferences
I was trying to add Microsoft Defender exceptions via PowerShell to a clients server (Windows Server 2016 if that matters) the other day and it was always failing – the error was: This was returning...
View ArticleRemoving a Default Sensitivity Label
In Microsoft 365 Sensitivity Labels you can have a label policy that requires that all content is labelled. If you enable this and then later decide this is not for you, you can republish your label...
View ArticleiOS and Outlook Mobile and Duplicate Contacts
Of the back of a few conversations recently on having duplicate contacts in the iOS platform because of syncing via multiple different routes or devices I decided to try to reproduce the issues and see...
View ArticleAzure AD Consent For Zoom App Not Applying
This is a issue where you enabled Admin Approved Consent in Azure AD (as you should) and you require apps that have high data access rights to be approved. The Zoom add-in/desktop app falls into this...
View Article[New] External Email Notification in Exchange Online
This is a new feature released in March 2021 that adds support in Outlook (Mac, OWA, Mobile) for the display of the external status of the sender – note at the time of writing it does not add this...
View Article550 5.1.8 Access denied, bad outbound sender AS(42003)
“Your message couldn’t be delivered because you weren’t recognized as a valid sender. The most common reason for this is that your email address is suspected of sending spam and it’s no longer allowed...
View ArticleIntune MAM Exemptions – Discovering URL Protocols
In Microsoft Intune you can create a secure container where the data in your apps cannot leak outside of. That is, you can restrict copy/paste outside of the supported apps and restrict opening the...
View ArticleCentrally Managing Microsoft 365 Apps Updates
It used to be the domain of 3rd party enterprise apps or Microsoft’s Configuration Manager to control the updates (or servicing) of your Microsoft Office apps (now called Microsoft 365 Apps). With...
View ArticleProxies and Firewalls and Installing Microsoft Office Subscription Software
Microsoft Office 365 client software (Word, Excel etc.) has been available as a subscription model for over ten years and using the Click-2-Run technology for all or most of that time, but I still see...
View ArticleOutlook AutoDetect And Broken AutoDiscover
Those in the Exchange Server space for a number of years know all about AutoDiscover and the many ways it can be configured and misconfigured – if even configured at all. Often misconfiguration is to...
View ArticleMicrosoft 365 – How To Enable A Progressive Web Application
A Progressive Web Application (PWA) is an application that runs in a website which you can separately have an icon for on your desktop (Windows, Chromebook, Raspberry PI, Linux, Android and other...
View ArticleBlock Downloads and Other Controls in Microsoft Dynamics
This article will walk you through the use of Microsoft Cloud App Security (MCAS in the rest of the article) to implement data protections in the Microsoft Dynamics product range. This includes...
View ArticleAllowing “Phish” Training Emails in Exchange Online
With the introduction of “Secure by Default” in Exchange Online, where you used to add IPs and other settings such as allow-lists to allow your phish training emails to get through to your users this...
View ArticleFinding Existing Plus Addresses
Exchange Online will automatically enable “Plus Addressing” for all tenants from Jan 2022. This change may cause issues if you have existing mailboxes where the SMTP address contains a + sign. That is,...
View ArticleWe can’t set up the conversation Teams Chat Error
You want to chat from Teams to a person outside your company who is also using Teams and you get “We can’t set up the conversation because your organisations are not set up to talk to each other”. This...
View ArticleTurn Off Self-Service Purchases in Microsoft 365
Microsoft 365 has a route for users to buy their own products rather than products purchased and licenced by the company. This blog outlines how to turn this off. Install the MSCommerce PowerShell...
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