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Retire last Exchange Server but keep directory sync
Hello all -- I'm looking for guidance on the recommended way to retire our last Exchange 2019 server while maintaining directory synchronization in our environment. We do not have any mail flowing through our exchange server, never have. It was only installed 10 years ago for a hybrid deployment. I believe one supported path is to stand up a member server and install the Exchange Management Tools on it. Given that Exchange 2019 is already out of support, is the the long term path moving forward? I've also read about an attribute "IsExchangeCloudManaged". In this scenario, I can set this on a per-mailbox basis and manage attributes such as proxyaddresses, extension attributes, and other non-AD-managed attributes. Is this the more forward path to take? Thinking about our user provisioning process now, we have a PowerShell script that creates the user in AD and connects to our hybrid Exchange server to Enable-RemoteMailbox. In this scenario, we would still create the user in AD, wait for the sync to happen, then enable the IsExchangeCloudManaged. Would this now provide the ability to manage additional addresses, or even, shared mailboxes without having to migrate from AD --> EXO - all while keeping AD in sync with cloud mailboxes? Am I thinking about this correctly? Thanks for any insight sb
Dynamic Distribution Group with no Disabled Accounts
Hi I'm trying to build a few Dynamic Distribution Lists in Exchange Online and want to only include Active Users (i.e., users that are marked "Active" in Azure AD). I've tried using the UserAccountControl attribute (-eq 514 or -ne 514 - both are returning the same results, which is strange), but it still includes user accounts that are disabled. This is how my recipient filter looks like: RecipientType -eq 'UserMailbox' -and UserAccountControl -ne 514 What's the best way to achieve this in Exchange Online? Thanks Taranjeet Singh
Exchange 2010 to Microsoft 365 Migration – Recommended Approach and Tools
I’m looking for guidance on migrating Exchange 2010 (on-premises) to Microsoft 365 / Office 365. Is a direct migration from Exchange 2010 supported, or is an intermediate hop (such as upgrading Exchange or setting up a hybrid configuration) required? Additionally, could you please recommend any reliable tools that can help with this migration? I also have a few PST files that need to be migrated as part of the process. I’d appreciate insights on best practices, common challenges, and lessons learned from real-world migrations. Thanks in advance for your help.Teams delegation permission issue with Onpremise Exchange Server
we have migrated the exchange server from 2019 to SE Environment and configure the OAuth 2.0 which is working perfectly but there is one issue that one of the user is using Shared calendar but while he create the meeting invite along with Teams meeting option then everytime it shows an error "please login into the meeting" If anyone works on this case please guide or help us. ThanksExchange Online PowerShell Dumps the Credential Parameter
On February 12, Microsoft announced the deprecation of the Credential parameter for the Connect-ExchangeOnline cmdlet in the Exchange Online PowerShell module. The deprecation won’t affect interactive sessions (which should all be protected by MFA), but it might stop some background jobs running when Microsoft retires the server components that currently support the ROPC authentication flow. Time to check scripts! https://office365itpros.com/2026/02/16/exchange-online-powershell-ropc/
DMARC rejection after Exchange upgrade
I'm having problems with inbound emails getting bounced as Undeliverable due to DMARC rejection. For many years I've had my email come through Fasthosts / Livemail to my own domain (qts.org.uk) with catch-all forwarding set to forward everything to my GMail account. Just recently Fasthosts have upgraded their servers to Exchange and I've started getting DMARC rejections from GMail which start Diagnostic information for administrators: Generating server: exchange2019.livemail.co.uk Total retry attempts: 1 (my gmail email address) t1-hex-xprelay.gem.livemail.co.uk Remote Server returned '550 5.7.26 Message rejected by DMARC policy by gmail.com. Please use your own email address as the sender, instead of (sender's email address). [MSG0009]' Which bounce from Fasthosts / Livemail back to my GMail address. My own domain has SPF, DMARC, and DKIM configured I've done a little digging and it appears to only affect senders from originating domains with DMARC set to reject. So either GMail has coincidentally become much more strict (possible) or Fasthosts are somehow failing to forward emails fully transparently. I have spoken to Fasthosts and logged the issue with them and was not impressed so I hope the experts here can offer a solution I can forward to them.Microsoft Previews userConfiguration Graph API
A new userConfiguration API is available to retrieve data from Folder Associated Items (FAIs) in Exchange mailboxes. The new Graph API is part of the EWS migration project and is intended to allow application developers to migrate EWS code that updates FAIs with Graph equivalents. Most Microsoft 365 tenants will never use this API, but it’s nice to know how things work. https://office365itpros.com/2026/02/05/userconfiguration-api-beta/
Report for email reply time for shared mailbox
Hi All, i am looking to crate report for management for our KPI. Management want to to know how quick teams are replying to email once it's landed to mailbox. Also, average reply time for the particular mailbox for a day or week or month. if nay one know how to achieve this please let me know it will be grate help. Thanks, PreyashExchange 2019 Certificate Error
Hello guys, I plan to migrate my users on Exchange 2019, currently, i have 2 Exchange 2013 servers. As soon as i installed the exchange Server 2019, I changed all the virtual directories and i also runned the command to make sure the users doesn't connect on the new server. But now every users who uses Microsoft Outlook from the environment have a pop up that says that the certificate is not valid, and its normal because I can't apply the services SMTP and IIS on my wildcard certificate. Indeed, when i enable the services SMTP and IIS on my new certificate, it doesn't apply. I tried to enable from the ECP, it says "Are you sure you want to replace the existing certificate", when i say yes, it doesn't change anything, the smtp service is still unchecked. I also tried to stop IIS and restart IIS, restart the server but it doesn't changed anything, and I also tried to enable the services directly with the powershell command with the correct thumbprint of the wildcard certificate as it is said on the event viewer : "Enable-ExchangeCertificate -Server "EX01-2019" -Thumbprint A6BC992FDD... -Services SMTP,IMAP,IIS -Force" But it still don't work, when i check the certificate, only the service IIS is active. I had to uninstall completely the exchange server, because users were complaining about the pop up. Have anyone faced this problem before? Thank you very much for your advices guys
Keep user account but provision new empty mailbox
i did ask in another forum but thought i would ask here as it seems impossible... we are hybrid exchange. We have litigation hold and purview retention policies in place. We have a scenario where an existing user is moving to a new role and her existing mailbox needs to be dissociated from her AD account and a new clean mailbox provisioned. The original mailbox needs to stay as inactive and searchable via ediscovery. Is it possible? I have asked AI and its said: Make sure all the holds and retention policies are in place Move the AD account to a non-syncing OU and run a delta sync The mailbox should show as inactive in exchange online Then it tells me to run Set-User <UserUPN> -PermanentlyClearPreviousMailboxInfo but ONLY if the recipient type shows as MailUser or User This is where i am stuck as it is still UserMailbox. It told me to restore the cloud only object which i did. But it still shows as RecipientType = UserMailbox when i check. Its now just a cloud only account, it has no license. The mailbox is inactive but its still a UserMailbox Is what i am trying to do possible? Would now just changing the cloud only account to have a new email address be the only way to retain it and then sync back the on-prem account?
