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Clarification on Exchange Server SE Edition and Licensing
Hi everyone, We are planning to implement Microsoft Exchange Server on premises. Recently, we noticed that Exchange Server 2019 is approaching its end of life, and we don’t see any pricing information for the new Exchange Server Subscription Edition (SE). In this situation, what is the best approach? Do we need to purchase Exchange Server 2019 first and then upgrade to the SE version? If so, how does the pricing for the Subscription Edition work? Will there be an additional cost (for example, a yearly subscription) after upgrading? We would really appreciate any clarification or guidance on this matter. Thank youSolved225Views1like5Comments
Meeting rooms - end of synchronization with AD
Hi all, We have a hybrid environment, and the meeting rooms are "physically" in Exchange Online—I can no longer see them on the on-premises Exchange server. However, they are still synchronizing from AD. What do I need to do to ensure that the meeting rooms are completely in Exchange Online and do not synchronize from AD? So that the "point of truth" is in Exchange Online? Thank you for your tips.SolvedGepardSep 27, 2025Copper Contributor92Views0likes2Comments
Migrating on-prem functional shared mailboxes to 365
I have an on-premises Exchange environment (SE Edition) with Edge servers, configured in a hybrid setup. New users are provisioned directly in Office 365, but many legacy users still exist solely on-premises. In addition, we have around 800 shared/functional mailboxes that are local and were not created as hybrid objects. I need to migrate these on-prem shared mailboxes to Office 365. I’m unsure of the best approach—should I: Convert them to full hybrid and migrate using the hybrid tools? Recreate them manually in Office 365? Or is there another recommended method? My goal is to make the transition as seamless and transparent as possible for users, while keeping the process simple and efficient on the admin side.SolvedJulianHaines1Sep 25, 2025Copper Contributor47Views0likes1CommentMystery Emails for Meeting
Hello I have this weird issue that I have been tracking down. A user's mailbox sends emails out every night as reminders to an appointment that they setup. The email goes to all participants in the meeting, regardless of whether they accepted or not. I used message trace to track the source IP and it trusted, none network within my management, which wouldn't have devices unaccounted for. I am not concerned that it is malicious or an account takeover situation, since there isn't any content added to the meeting. It is the same email every morning this week. Is there a cause for this? Are there any options in Exchange or outlook that this could be attributed to? For example one that would effectively say "keep reminding participants of this"? A few other details, which may or may not be relevant: On at least one occasion, I verified that their computer was turned off. So, it is either their iPad or there iPhone, but I am not sure if that is relevant. I have this posted to an apple forum as well. Of the 6 participants that the message goes to (according to exchange message trace) only 1 actually says that it shows up in his mailbox. Which makes me think that the other mailboxes are simply processing the redundant meeting message and there is something special about this one. But, I don't want to focus on that because it is too dependent on user input. It's really a question of why the messages are being sent in the first place. Thanks! This is a weekly recurring meeting and these mystery emails are going out daily.SolveddirtadminAug 29, 2025Copper Contributor85Views0likes1CommentRequest for Official Cleanup Script to Retire Exchange 2016 After Migrating to Exchange SE
Subject: Request for Official Cleanup Script to Retire Exchange 2016 After Migrating to Exchange SE Hi Exchange Team, I've successfully migrated mail flow and management to Exchange Server Subscription Edition (SE) and am now preparing to retire our legacy Exchange 2016 server (EXCHANGE2016). I’ve followed the documented steps from the Decommissioning Exchange Server 2016 blog post, but I recall that a script—Cleanup-ExchangeLegacyServer.ps1—was referenced or released separately to automate the final cleanup. I’m unable to locate the actual script and would appreciate guidance on where to find it. Here’s a summary of what I’ve completed so far: Steps Completed Mail Flow Migration Reconfigured send connectors: Set-SendConnector "Outbound to Office 365" -SourceTransportServers @("EXCHANGESE") Verified SmartHost routing and TLS settings. Receive Connector Cleanup Disabled all receive connectors on EXCHANGE2016: Get-ReceiveConnector -Server EXCHANGE2016 | Disable-ReceiveConnector Mailbox Migration Moved all user, arbitration, audit log, and monitoring mailboxes: Get-Mailbox -Server EXCHANGE2016 Get-Mailbox -Server EXCHANGE2016 -Arbitration Get-Mailbox -Server EXCHANGE2016 -AuditLog Get-Mailbox -Server EXCHANGE2016 -Monitoring Queue Validation Confirmed no active queues on EXCHANGE2016. Connector Scope Audit Verified EXCHANGE2016 is no longer listed in any send connector: Get-SendConnector | Where-Object {$_.SourceTransportServers -contains "EXCHANGE2016"} Remaining Question Should I now: Run an official cleanup script (e.g., Cleanup-ExchangeLegacyServer.ps1) to safely remove EXCHANGE2016’s configuration objects while keeping Exchange SE intact? Or simply uninstall Exchange 2016 from EXCHANGE2016 and decommission the server manually? I want to ensure I follow Microsoft’s best practices and avoid breaking hybrid management or leaving orphaned AD objects. If the script is available, could you please share the official download link and any updated guidance? Thanks in advance for your help! —MichaelSolvedmrlovettAug 28, 2025Copper Contributor136Views0likes2Comments
Assistance with Database Transaction log relocation
Dear Exchange Community, Recently, I have been tasked to relocate the Database log files and folders to another partition. to elaborate further, I have 2 mailbox servers with DAG configured and 4 Databases. As everyone is aware, one partition for databases and one dedicated for DBs logs (On both servers). I would like to know how can I do this, What are the requirements? and what precautionary measures should I take in order to minimize the failure or even database corruption. Any help regarding this matter would be appreciated a lot ThanksSolvedHamedNourollahAug 20, 2025Copper Contributor98Views3likes5CommentsO365 hybrid connector to onprem failing TLS
We're having issue with the connector to on-prem from Exchange Online If we enable the TLS it fails with the error Cannot connect to remote server [Message=451 5.7.3 STARTTLS is required to send mail Looking at the on-prem server we noticed that if connecting to port 25 STARTLS is missing but connecting to port 587 is present PORT 587 250-SIZE 20971520 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-STARTTLS 250-AUTH NTLM 250-8BITMIME 250-BINARYMIME 250 CHUNKING 451 4.7.0 Timeout waiting for client input PORT 25 250-SIZE 62423040 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250-BINARYMIME 250 CHUNKING 451 4.7.0 Timeout waiting for client input Is there a way to have it enabled on port 25 as well ?SolvedStefanoC66Aug 19, 2025Iron Contributor212Views0likes7Comments
Exchange 2016 Maximum number of recipients in a message that's sent by the specific sender
Hello, I want to know if the RecipientLimits value on a mailbox can override the MaxRecipientEnvelopeLimit. For example, if I set the MaxRecipientEnvelopeLimit to 50 to limit all organization mailboxes to a maximum of 50 recipients, and then I set the RecipientLimits of a specific mailbox, let’s say user10@mylab.local, to unlimited. Can user10 send an email with 100 recipients or not?SolvedMasPAN74Aug 18, 2025Brass Contributor140Views2likes6Comments
Discrepancy with shared mailbox when removing user-mailbox
Hello, When we remove a mailbox from Exchange 365, we see a discrepancy with the shared mailboxes the user had access/permissions for. - the user-object is deleted for "Full-Access" - the user-object is not deleted for "Send As". Because the user/mailbox does not exist anymore, now the SSID (S-1-5-21-.......) is displayed instead of the users mailaddress. Why isn't 'Send As' cleaned up; 'Full-Access' is? Now we have several old permissions on the shared mailboxes. Kind regards, ArjanSolvedArjanBroekhuizenAug 14, 2025Iron Contributor112Views1like4Comments
Centralized mail transport and sending outgoing messages directly from EXO
Dear Community I have a following question: my company is using Exchange hybrid environment, with centralized mail transport. Both incoming and outgoing messages are routed through on-prem mail gateway, also MX points to it. We would like to deprecate the on-prem gateway soon and the first step might be changing routing for outbound emails, so they go directly from EXO to gmail.com for example. And here is the real concern - is there any tricky way, to set this routing selectively, for a pilot user group first, before we change it globally? I know about Set-OutboundConnector and RouteAllMessagesViaOnPremises parameter, but I wouldn't like to change it before doing some test on selected mailboxes. Will be happy for any suggestion. Best Regards MarcinSolvedMarcin K.Aug 11, 2025Brass Contributor210Views0likes7Comments
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