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Hybrid Exchange 2019 move to M365
Dear All, I am asked to move/ migrate the existing Hybrid Exchange to M365. All mailboxes are located in M365. MX Record is pointing to the third-party spam filtering company which we are not too sure either stay with them or not. My next concern is the Send and Receive connectors. has any one of you done similar task like this? any help or document/ link would be much appreciated. Regards
Exchange 2016 Decommission
Hi all, I am trying to decom my 2016 environment and cannot disable (Disable-Mailbox) the final 16 mailboxes (out of thousands). Am getting the error Active directory response: 00002098: SecErr: DSID-03150A45, problem 4003 (INSUFF_ACCESS_RIGHTS), data 0. I have been troubleshooting this for HOURS now. It's not enabling inheritance on the user perms (every article suggests that). The perm exchange trusted subsystem isn't there. The users do not have any admin groups. It's nothing that I can find in the first 6 pages of googling. Sadly, of course, there is no support anymore so can't even raise a ticket. Can't uninstall Exchange with mailboxes left :( Any idea's are more than welcome, please. Thank you.
Permission activesync on smartphone
Hi everyone, when you grant the permissions in question to manage company email from a smartphone, do these permissions, in addition to Remote Wipe, Password Enforcement and Device Encryption (I remember these as the main ones), somehow give the Exchange administrator access to my personal data? For example, photos, any documents saved on the SD card or on the smartphone itself? Thanks in advanced!Send admin notifications on x number of messages from an email address
Hi, We're having a problem with a repeat spam/phishing offender that recycles email addresses from a particular domain. Because the email address is new it hasn't had a chance to be picked up by blacklists, so it doesn't get picked up as spam. We can't block on content, subject or sender because it all changes so for these campaigns we're relying on user reports to give us the heads up. We also can't block the domain because we receive legitimate email from the domain also. I'd like to change this so we can hit them before users notice and possibly whilst the spam campaign is in flight but I'm unsure as to how to go about it. Is there a rule or other setting I can configure which sends notifications to specific e-mail addresses if, say 100 emails were received from any email address (or from a specific domain?) within an hour, or 5 hours? I don't see how I can configure such a rule in mailflow rules so I'm guessing this might be somewhere else. There's an element of us likely being falsely alerted to marketing campaigns, but hopefully it's configurable enough that we can limit it down to only applying this against a specific sender domain, or adding a new custom mailflow rule which will lower the likelihood of false positives. Many thanks, - LswardWill these commands fix our phantom meetings issue?
I opened a ticket with Microsoft Support for an issue we are facing where "phantom" meetings are appearing in at least two of our meeting room calendars. The subject of the meeting says "Private appointment" and the lock icon appears at the bottom, and when you click on any of them they disappear from the calendar, only to re-appear when you navigate away and come back. They appear in Classic Outlook, New Outlook and Outlook for the web. The support rep is telling me to run these commands on the room mailbox to "reset the room mailbox availability cache": Set-CalendarProcessing -Identity <roommailboxupn> -RemoveOldMeetingMessages $true Set-CalendarProcessing -Identity <roommailboxupn> -AutomateProcessing AutoAccept But if I run Get-CalendarProcessing, it confirms that these are the existing settings already: Get-CalendarProcessing -Identity <roommailboxupn> | fl RemoveOldMeetingMessages,AutomateProcessing RemoveOldMeetingMessages : True AutomateProcessing : AutoAccept This can't possibly do anything, right? I should ask my CSAM to open a GetHelp on this case, right? Does anyone know how to actually fix this issue?High Volume Email is Generally Available and Ready to Charge
On April 1, Microsoft announced the general availability for the High-Volume Email (HVE) solution together with details of the PAYG charges incurred to send email to internal recipients, which is all that HVE can do. Microsoft will enable HVE charging on June 1, 2026, Before then, you’ll need to create a billing policy and link it to a valid Azure subscription if you want to continue to use HVE. https://office365itpros.com/2026/04/23/hve-ga-charging/Is the Archive mailbox self-help diagnostic working for anyone?
Just curious: is the archive mailbox self-help diagnostic at https://aka.ms/PillarArchiveMailbox working for anyone? When I run it, instead of getting results about the user whose UPN I entered, I get this: The following issues were found with your archive mailbox. No account was found for [The UPN of my admin account]. Make sure you've entered the correct email address or create a new account with that name. For more information, see Add users to Office 365. I tried opening a ticket with Microsoft Support, but they refused to work on it without requiring me to do all the legwork of gathering logs and HAR traces and who knows what else, despite the fact that the support agent was able to replicate the exact same issue in his lab.
User cannot rename categories even when being the owner
Hi guys, I have a user that cannot rename categories in a mailbox whilst being the owner. As you can her permission level is set on owner. And yet the rename is greyed out: User says she was able to rename just some time ago, but when she tried on 17/04/2026 she couldn't. Anyone has any ideas?Preserving permissions during EXO migration
Hi, Can you help me understand the outcome of preserving the permissions in our scenario. Exchange Server 2016 (soon Exchange SE) in a hybrid with Exchange Online. We are moving 75% of the mailboxes to Exchange Online. What ways will preserve or break the full-access or sendas permissions? I guess best way would be to migrate both the user and the shared mailbox at the same time in the same batch to keep the permission? If we migrate the user in batch 1 and shared mailbox in batch 2 will that preserve/break the full access/send as? If we migrate the shared mailbox in batch 1 and usermailbox in batch 2 will that preserve/break the full access/send as? If the permission is linked directly on the shared mailbox or via a security group is there a difference? Thanks!
