Exchange: Online – Tag for external email

Exchange will make available a PowerShell cmdlet so that admins can enable the protections against spam & phishing threats from external senders.  This will be achieved by presenting a new tag on emails called “External” in the message list in Outlook on the web, the new Outlook for Mac, Outlook for iOS and Android. In some Outlook clients, a “mail tip” will be included at the top of the reading pane with sender’s email address.
More info: https://techcommunity.microsoft.com/t5/exchange-team-blog/native-external-sender-callouts-on-email-in-outlook/ba-p/2250098

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Exchange: Online – Tag for external email messages received

Exchange will make available a PowerShell cmdlet so that admins can enable the protections against spam & phishing threats from external senders.  This will be achieved by presenting a new tag on emails called “External” in the message list in Outlook on the web, the new Outlook for Mac, Outlook for iOS and Android. In some Outlook clients, a “mail tip” will be included at the top of the reading pane with sender’s email address.

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Exchange online auto-expanding archive–Automatic archive of mailbox items in Purges,Versions and Discovery Holds folders

We are rolling out an update which will automatically move any mailbox items preserved in the “Purges”, “Versions”, and “Discovery Holds” folders in the primary mailbox to the archive mailbox daily. Customers will no longer be required to create separate policies for archiving email content in the “Recoverable Items” folders mentioned. Once this change finishes rolling out, the existing archiving policies created by customers for these folders will be ignored. This change does not impact the “Deletions” folder which is also part of the “Recoverable items” folder. 

When this will happen:

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Reminder: Update to Microsoft 365 and Outlook for Windows connectivity

30-day/Final Reminder (MC229143 – DEC ’20 and MC274503 – July ’21): To ensure that we meet performance expectations, we areupdating the supported versions of Outlook for Windows that can connect toMicrosoft 365 services.

Starting November 1, 2021, the following versions ofOutlook for Windows, as part of Office and Microsoft 365 Apps, will not be ableto connect with Office 365 and Microsoft 365 services.

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Upcoming Changes to Auto-Expanding Archive

Internet Explorer 11 desktop application

  • Timing: The IE11 desktop application will be retired on June 15, 2022
    • Windows 10 LTSC and Server not affected. For a full list of what is in scope for retirement, see the FAQ.
  • Action:

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Microsoft Defender for Office 365: DomainKeys Identified Mail (DKIM) support for Advanced Delivery

We’re adding support for DomainKeys Identified Mail (DKIM) domain entry to the Advanced Delivery policy. This enhancement enables security administrators to use DKIM domains in addition or instead of P1 sending domains to configure their third-party phishing simulations.

This option adds flexibility as well as another secure method for third-party phishing simulation vendors that utilize large number of P1 sending domains in their phishing simulation campaigns. Vendors can instead sign all their domains with one or a few DKIM domains. The end user (security administrator) will then just need to specify the DKIM domain in their advanced delivery policy configuration.

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Exchange Online and Basic Auth – September 2021 Update

We’re making some changes to improve the security of your tenant. We announced in 2019 we would be retiring Basic Authentication for legacy protocols, and in early 2021 we announced we would begin to retire Basic Authentication for protocols not being used in tenants, but not disable Basic Authentication for any in-use protocols until further notice.

Today, we are announcing that we are restarting the program to end the use of Basic Auth in Exchange Online. Beginning October 1, 2022, we will begin to disable Basic Auth in all tenants, regardless of usage.

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Anti-malware policy : Common attachment filter : Additional file types block by default

The ‘Common attachment filter’ option in the ‘Anti-malware’ policy helps the Administrator configure the file types (based on file extension) which need to be blocked in the emails. This block action is applied anytime the file type of any attachment in the email matches this configurated file type list.

The current pre-configured list has 96 file types. Of these 96 file types, 10 files types are selected by default in the block list. When a new policy is created, these 10 file types are selected, to be blocked, by default. Administrator can make changes to this selection by selecting more file types or making changes to existing file types. If the Administrator chooses to extend this behavior to more file types, then this is possible using PowerShell option.

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Updates to spam reporting

We’re working on creating consistent reporting experiences for customers, and as a result we’re retiring the standalone spam detections report. A new Spam detections report view will now be available in the Threat Protection Status report.

Key points

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Change to the minimum iOS system requirements for Outlook for iOS and watchOS

If your organization does not use iOS or watchOS, you may disregard the below message.

We are changing the minimum iOS system requirements for Outlook for iOS and watchOS.

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I've been working with Microsoft Technologies over the last ten years, mainly focused on creating collaboration and productivity solutions that drive the adoption of Microsoft Modern Workplace.