Microsoft Depreciates SMTP AUTH for Exchange Online
Exchange Online announced two important changes on April 15. SMTP AUTH is being depreciated and a new external recipient rate limit is being introduced.| Office 365 for IT Pros
Email bounces in Microsoft 365 can be frustrating, especially when you’re unsure why a message wasn’t delivered. The bounce message you receive, known as a Non-Delivery Report (NDR), provides a specific error code that helps identify the root cause. This guide will walk you through how to troubleshoot and resolve… The post How to Resolve Email Bounces in Microsoft 365 appeared first on Office 365 Reports.| Office 365 Reports
Imagine starting your Monday morning, opening Outlook, and being greeted by hundreds of unread emails, meeting invites buried under newsletter subscriptions, important client messages lost between internal threads, and follow-ups forgotten in the chaos. For professionals who rely on Outlook daily, poor email management isn’t just frustrating, it’s a productivity… The post How to Manage Emails in Microsoft Outlook appeared first on Office 365 Reports.| Office 365 Reports
An assembly clash happens when a PowerShell module attempts to load a .NET assembly only to find that a different version is already loaded in the session. Unhappily, this kind of thing happens far too often with Microsoft 365 modules, which implies that there isn’t a great deal of coordination between different development groups. All you can do is to load modules in the right order.| Office 365 for IT Pros
With Exchange 2019 support ending, should you upgrade to the Subscription Edition or remove your last server? This guide covers the costs, hybrid complexities, and tools to simplify your decision. The post Should You Upgrade to Exchange SE or Remove Your Last Server appeared first on Our Cloud Network.| Our Cloud Network
Exchange Online announced two important changes on April 15. SMTP AUTH is being depreciated and a new external recipient rate limit is being introduced.| Office 365 for IT Pros
Everyone probably knows how to use the Send As and Send on Behalf of permissions to send email from user mailboxes. Here we venture into the same task, but for Microsoft 365 Groups, shared mailboxes, distribution lists, and mail-enabled security groups. Once your permissions are aligned, everything is pretty simple.| Practical 365
Each Microsoft 365 tenant comes with an onmicrosoft.com domain, like lazyadmin.onmicrosoft.com. This domain name is normally only used during the setup phase to quickly create users and allows you to log in to the new| LazyAdmin
Microsoft will impose a throttling limit for external recipients for tenants that use MOERA domain addresses to send outbound email. The limit is designed to stop tenants using mailboxes with primary SMTP addresses from MOERA domains from sending email, a technique that’s often used by spammers. This shouldn’t cause a problem for legitimate organizations who already have vanity domains, but it might stop some spam.| Office 365 for IT Pros
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).| Office 365 for IT Pros
Outlook Mobile clients have started to highlight messages received from unverified senders. But what does "unverified" mean and what can be done to fix the problem? The issue lies at the sender’s end, so the administrators of the sending system must verify their email configuration to make sure that Exchange Online can validate inbound messages from their domain. The same visual markers are available in Outlook classic, OWA, and the new Outlook.| Office 365 for IT Pros
Microsoft Defender for Office 365 (MDO) requires shared mailboxes to be licensed but doesn't extend the same requirement to Microsoft 365 Groups. Given that Microsoft 365 Groups have group mailboxes and can function very much like shared mailboxes, the difference in licensing is remarkable. Why does this happen? It could be due to internal Microsoft politics, omissions, or just a preference for Groups. Who knows?| Office 365 for IT Pros
Microsoft plans to remove the ability of users to perform mobile device management (for their devices) from the OWA and new Outlook for Windows clients. It’s unclear how much use these options receive, but following the update, users will only be able to disable or wipe a device remotely using features provided by O/S vendors. Administrators can still act to block or wipe lost or stolen devices.| Office 365 for IT Pros
The Connect-IPPSSession cmdlet is needed to connect to the Security and Compliance endpoint to update a Microsoft 365 retention policy. Unhappily, the Security and Compliance module doesn’t support managed identities, which makes it harder to run Connect-IPPSSession securely in an Azure Automation runbook. In the end, we use a credential stored in the automation account. And then we had to disable WAM. All explained here.| Office 365 for IT Pros
A question about shared mailboxes brought up the topic of licensing requirements when a tenant has Microsoft Defender for Office 365 (MDO). The news is not good. Once MDO is active, every shared mailbox needs an MDO license, and every user mailbox must also be licensed for MDO (those with E5 licenses are covered). At $5 per month, those MDO licenses can ramp up to a considerable cost. Ouch!| Office 365 for IT Pros
Microsoft says that few customers have installed the dedicated hybrid connectivity app that's needed to migrate from EWS. It's time to install that app! If not, rich coexistence between cloud and on-premises components will stop working for several days when Microsoft imposes service time-outs in August, September, and October to prompt customers to take action. It's time to install the dedicated hybrid connectivity app.| Office 365 for IT Pros
Direct Send in Microsoft 365 has always been a great solution to let devices or internal apps send emails without authentication to your own users. But recently, this convenience has turned into a real security| LazyAdmin
After being asked whether licenses are needed to include shared mailboxes in Microsoft 365 retention policies, I investigated and found that licenses are not. This led to a consideration of the steps needed to create a special retention policy for shared mailboxes (with PowerShell, naturally) and how to avoid retention setting collisions with other policies. All explained in detail here.| Office 365 for IT Pros
The new Outlook for Windows now supports the NoSignOnReply control for inheritance of S/MIME signatures from messages to replies. It’s an update to match the feature that’s been in Outlook (classic) for a long time. The new setting is only available for Exchange Online and isn’t supported by OWA.| Office 365 for IT Pros
The Exchange Extended Security Update program is a 6-month lifeline for organizations struggling to upgrade servers to Exchange Server SE. Although it’s easy to upgrade a server to , many things might get in the way before the Setup program can run. Small things like vacations, buying new hardware, or deploying a new O/S. From August 1, organizations can sign up to receive security updates from October 2025 to April 2026.| Office 365 for IT Pros
A July 15 announcement says that Exchange Online is reducing the Delicensing Resiliency threshold from 10,000 to 5,000 mailboxes. That’s fine, but this feature should be available for all Exchange Online tenants. It’s a sticking plaster for how group-based licensing works and is inconsistent with how OneDrive for Business deals with unlicensed personal user data.| Office 365 for IT Pros
July 1 marked the general availability of Exchange Server SE (subscription edition), the latest in a long line of server releases going back to Exchange 4.0 (1996). Exchange Server SE will soon be the only game in town after Exchange 2016 and 2019 reach end of support in October 2025. In other news, Defender for Office 365 now boasts protection against email bombs.| Office 365 for IT Pros
Microsoft announced the GA for the new message tracing feature on June 3. The old code will be deprecated in September 2025, so it's time to update any PowerShell scripts that use the Get-MessageTrace or Get-MessageTraceDetail cmdlets. Upgrading is easy and shouldn’t take too long, once you find the time to do the work.| Office 365 for IT Pros
A recent post revealed that the Mailbox Import-Export Graph API doesn't capture audit events for its operations. The API is in beta, but this is disappointing. Auditing any mailbox is important, but it becomes a critical requirement when the possibility exists that attackers could use the API to exfiltrate mailbox data outside of the tenant. This is a hole that Microsoft needs to close.| Office 365 for IT Pros
The new TwoClickMailPreviewEnabled setting in the Exchange organization configuration controls if OWA and the new Outlook for Windows use two-click confirmation to open protected email. The new feature could be useful for people who commonly open confidential and protected email in situations where someone else could see what they’re reading. In other situations, it will irritate people.| Office 365 for IT Pros
Enhancing the security of your organization’s communication channels is more critical than ever. Building on foundational protocols like SPF, DKIM, and DMARC, you can implement advanced technologies such as IPv6, DNSSEC, STARTTLS, DANE, and RPKI to secure Microsoft 365 email environments, specifically focusing on Exchange Online functionality. These protocols work in tandem to mitigate risks,... The post From SPF to DANE: Securing Microsoft 365 Email Communications appeared first on Modern ...| Modern Workplace Blog
One thing that is a bummer is Exchange online does not support setting an autoreply / out of office message for a distribution list. Usually if you want such functionality, you'd convert the distribution list to a shared mailbox and configure the autoreply or use a 3rd party utility, or potentially come up with some […] The post Set out of office / autoreply for distribution list for Exchange online appeared first on Jack Stromberg.| Jack Stromberg
Microsoft has launched modern dynamic distribution lists, a mechanism to make the calculation of list membership more reliable and robust.| Office 365 for IT Pros
It's time to check recipient filters for dynamic distribution groups to ensure that you don't have any wildcard prefixes used with the -eq operator to find recipients based on their email addresses. A November 30 update will stop this kind of recipient filter working, and might have a knock-on effect on other processes.| Practical 365
A PowerShell script to remove user, or a set of users, from all groups they are a member of by using the Graph API methods. You can leverage the additional parameters of the script in order to also remove any directory role assignments, ownership assignments and delegate permission grants. The script supports Microsoft 365 Groups, Entra Security Groups, Exchange Distribution Groups and Mail-Enabled security groups.| Blog
