Questions tagged [exchange-hybrid]

An Microsoft Exchange hybrid deployment offers organizations the ability to extend the feature-rich experience and administrative control they have with their existing on-premises Microsoft Exchange organization to the cloud.

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33 views

In an Exch 2016/EXO hybrid deployment, should a telnet message test on prem be considered internal

I have inherited a hybrid deployment between Exchange 2016 on prem and Exchange online. One of the first things I had to do was turn of centralized message transport, as it was adding two unnecessary ...
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Exchange 2013 Hybrid EAC not seeing mailboxes in a second domain

We have a hybrid setup. I have a situation where certain users are not showing up on the local on-prem Exchange 2013 server under recipients. We have two domains in our single forest. I will call our ...
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Exchange 2019 To replace Exchange 2013 in Hybrid Environment

After the recent Exchange Vulnerabilities were announced, we disconnected our Exchange 2013 server in our hybrid configuration and investigated any impact. There was none, but it has been decided that ...
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54 views

Having Trouble with Exchange Archive Errors - 365 Hybrid

I work in a hybrid 365 environment. Someone made some changes to the archives for users' mailboxes and now I'm getting errors in 365 admin center when I look at an active user:image of error box I was ...
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Hybrid Exchange - 3 step deprovisioning necessary when using archive

The Microsoft documentation for the Disable-RemoteMailbox powershell cmdlet states: Note: If you are deprovisioning a cloud mailbox and its associated online archive, you must first disable the ...
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119 views

Exchange 2013 with failed prepad execution leading to management groups with no roles asigned

A former sysadmin deleted several groups, included Exchange Management Security Groups. Ir order to repair his error, he tried to execute prepad. Prepad didn't execute correctly ending with this error:...
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565 views

On-premises users aren't getting email messages from Office 365 users

The DNS name of the Exchange 2013 server is servername.abc.local I setup a Hybrid Environment with the Public domain xyz.nl The UPN suffix of the abc.local domain is xyz.nl and I updated al users. The ...
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1k views

Exchange Hybrid, Issues with a Single User Account

We have a single user that was not created correctly in Exchange on-prem. This is causing issues with SMTP mail not routing/failing to deliver to the o365 email. In our environment, users are created ...
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2k views

On-premesis Mailboxes are Not Linked to Office 365 Mailboxes in Hybrid Exchange

I recently replaced a SBS 2011 PDC with a Server 2019 PDC. The migration went smoothly. A few years before that I switched over to Office 365. Instead of just leaving it be, I tried to uninstall ...
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177 views

O365 Hybrid: Can we select certain OUs and mailboxes to migrate instead of the whole forest?

This is probably a dumb question to ask. 1) When we do the Azure Active Directory Connect to synchronise on-premises Active Directory, can we just select a particular OU which stores all active staff ...
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200 views

O365 Hybrid and Sophos Email Appliance

I am planning to migrate our Exchange 2010 SP3 server to O365 using Hybrid environment. We also use Sophos Email Appliance which is a box sitting inhouse. Currently, the mail flows like this. ...
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386 views

Exchange 2010 hybrid Unable to change max receive size

I have Exchange 2010 and Office 365 set up in full hybrid mode. I have migrated some mailboxes over and mail flows as expected. Some of the mailboxes had a non default Receiving Message Size set while ...
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468 views

Exchange Hybrid message size restriction

I'm migrating mailbox to Office 365 and got stuck with Large Items Exception. I read about default message size restrictions. And set 100MB limit in Exchange Online. Then migration failed again. I ...
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881 views

HCW8078 Hybrid Exchange Error

I did a fresh install of DC1 DC2 and Exchange so I'm not sure why I am getting errors still. https://imgur.com/a/16IEtyh
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Exchange 2019 - Cannot send external mail

I have a domain and wild card cert installed. Currently I can login to https://mail.advsystems.com/owa/ I can send mail internally and receive mail internally. I can't receive mail from an ...
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Double Booking Issue on Exchange Room Resource

I am working on a double booking issue where Room calendars appear to be allowing meetings to be booked at the same time as other meetings. The calendars themselves seem to have the correct settings, ...
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194 views

Adding a new mail alias and need to sync existing

We have a secondary mail/web domain that has its own mail running through postfix and it is just being forwarded to the primary mail/web domain on exchange and O365. We want to add all of the email ...
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383 views

O365 Skype for Business Admin User list not displaying all domain users

We recently finished migrating on-prem exchange 2010 mailboxes to O365 in a hybrid environment (still existing) and are now exploring O365 functionality, including Skype. Half of the company is ...
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67 views

Office 365 migration where AD domain name is different to email domain name

My present environment is such that the AD domain name is abc.com while the Exchange 2010 email address domain names are @abc.com with @xyz.com as the reply to address. We want to use xyz.com and @...
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455 views

Exchange Online Hybrid Public Mail Folder not found

We are currently running Exchange 2016 on premises with modern public folders. We are migrating to Exchange Online using a full hybrid configuration since the migration will take a few weeks. I am ...
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1answer
511 views

Some Office 365 users unable to receive emails with attachments. Both internal and external sources

We have recently migrated our Mail service from an On-premise Exchange 2010 server to an Office 365 subscription. It's currently a hybrid solution but we plan on decommissioning the 2010 server in the ...
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388 views

Exchange Hybrid SMTP High Availability

I have been asked to setup exchange hybrid but I must have 2 Exchange Hybrid servers handling mail flow and mailbox migrations. Is it possible to deploy 2 Hybrid servers that are load balanced and ...
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Public Folders company setup are not showing for migrated users in E2010/O365 hybrid environment

We have a hybrid environment setup between Exchange 2010 and O365 for both mailboxes and Public Folders. Since putting Public Folders in hyrbid mode (with Public Folders beta turned on in Azure AD ...
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394 views

Figure out which Public Folder AD attribute is being shared with another object

We have a hyrbid environment setup between Exchange 2010 and O365 for both mailboxes and Public Folders. Since putting Public Folders in hyrbid mode (through use of https://docs.microsoft.com/en-us/...
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2k views

AltRecipient AD attribute on mail enabled Public Folder cannot be synchronized in hybrid environment with O365

We have a hyrbid environment setup between Exchange 2010 and O365 for both mailboxes and Public Folders. Since putting Public Folders in hyrbid mode (through use of https://docs.microsoft.com/en-us/...
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573 views

Run Sync-MailPublicFolders with backticks in Powershell command line

I'm trying to run: ``` Sync-MailPublicFolders.ps1 -Credential (Get-Credential) -CsvSummaryFile "sync_summary.csv" ``` from https://docs.microsoft.com/en-us/exchange/collaboration-exo/...
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691 views

Separate namespace for Exchange hybrid servers

I read somewhere that you could do the following hybrid deployment. 1) Two dedicated Exchange 2016 "hybrid servers" that are F5 load balanced 2) Create a new namespace called hybrid.contoso.com. (...
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Exchange 2010 to O365 Hybrid - Keep Public Folders changable

The company I am performing an Exchange 2010 to Office 365 migration for has public folders. We planned to perform the migration while the two systems are in hybrid mode, over the course of several ...
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1answer
2k views

Strange: Users can't delete items from public folders in Outlook 2016 when the client has been logged in for about 30 minutes

We are running Exchange Online and Exchange 2013 in hybrid mode. Our public folders are hosted online. After a fresh boot/reboot, our users can delete items (permissions vary from Owner to ...
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388 views

How to disable EOP for the whole organization in our exchange hybrid environment?

set-MailboxJunkEmailConfiguration -enabled $false only disable the EOP for mailboxes. it cannot ensure new mailbox's EOP is also disable. So what is the solution? Thanks.
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What happens when you re-run the Office365 Hybrid Configuration Wizard in an environment that is already setup?

Existing Infrastructure was an Exchange 2010 + Office365 Hybrid Configuration with all mailboxes hosted in Office365 which was configured months back. If we run the Hybrid Configuration Wizard again ...
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2answers
917 views

Which server to choose in Hybrid Configuration Wizard when adding new Exchange2016 server into existing Hybrid Environment with Exchange 2010?

Current environment has an on premises Exchange 2010 server configured in Hybrid Mode with Office365 with all mailboxes hosted within Office365. We just installed an Exchange 2016 server into the ...
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490 views

If a Contact is Created in AD, Will that Cause the Creation of a Contact in Exchange?

If a contact is created in the AD, will it automatically be created in Exchange as well? Windows Server 2008 R2 environment On-premise Exchange 2010 hybrid with O365 Exchange is on secondary DC AD ...
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2answers
8k views

“Relay Access Denied” error when trying to use Office 365 as mail relay

I redirect outgoing emails in my organization to my postfix MTA. from there, i'm redirecting the mails to office 365 for relaying to the original recipients. For external recipients, I get the ...
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579 views

OU Name with 'slash' in title “suddenly(?)” rejected by Exchange 2013/0365 Hybrid

We recently migrated from Exchange 2007 to 0365 Hybrid with a 2013 server on-prem. I'm reasonably sure I've made changes to users in the 'Web/IT' OU since the migration and not run into this error, ...
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869 views

How to manage individual mailbox of the batch migration?

I tried to migrate 4 mailboxes in a batch migration with 'manually complete' is on. When the synchronization is done, I noticed 1 of them is failed, I know how to fix the failed box. But the question ...
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896 views

In a hybrid exchange environment, how to send email from a mailbox in exchange on-prem to another mail box in exchange online?

We deploy hybrid exchange using the HCW, AADC has been deployed as well. Mailbox A is created on exchange online. Mailbox B is created on exchange on-prem. Now I can send an email from A to B. But I ...
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2k views

Is ADFS a must-have, when you deploy hybrid exchange server?

With AADC implemented in our AD and Office 365, we want to deploy a hybrid Exchange next, is ADFS a must? Thanks!
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Error message on exchange server with hybrid setup to Office365

Hybrid setup between Exchange 2016 and Office 365, 50% of the of the users are migrated to Office 365 and currently no problems reported. A few months later (today) I discovered this error message in ...
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Exchange hybrid mail flow [closed]

I have successfully installed and configured exchange 2016 for a hybrid setup in my organization mail flow is up and running for all scenarios except from on-premises to o365. Every other flow works ...
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20k views

how to backup/export office 365 email to pst in exchange hybrid environment?

We have a exchange hybrid environment. (some users are in onpremises exchange and some users are office 365. ) When we want to export emails from onpremis we use , below command to export mail box ...
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1answer
763 views

How to setup out of office message for hibrid office environment using powershell?

Im searching a way to set "Out of office" message for a user who is in office 365/exchange hybrid environment via powershell. We have a exchange hybrid environment. (some users are in onpremis ...
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135 views

Exchange hybrid mode with mixed mailbox stores

I need to understand Exchange online in hybrid environment a bit better, so the question I have is if for example I have a hybrid environment with some mailboxes online and some on premise. If on ...
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71 views

Exchange hybrid mode mailbox stores

Could you please explain how and where are emails stored in Exchange online hybrid configuration after you move a mailbox from on premises server to online? I have a test environment and after I moved ...
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449 views

Certificate warning - Outlook connecting to local Exchange 2016 FQDN while autodiscover points to Exchange Online

The following is the environment: One Exchange 2013 and one 2016 server. The 2016 server is in hybrid mode. None of the the client access URLs point to the 2016 server FQDN. Autodiscover.domain.com (...
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68 views

How can I perform an hybrid multibox search on Exchange from Powershell?

I have to adapt a script that do "OnPromises" searches a hybrid context. I used the New-MailboxSearch cmdlet to implement this script. The script searches all the indicated mailboxes and copies the ...
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1answer
761 views

Exchange multi domains hybrid migration

I have an AD forest with 1 parent domain and 3 subdomains(A.lan, 1.A.lan, 2.A.lan, 3.A.lan). Azure AD Sync is configured and all accounts are synchronized. All domains have differents supplementary ...
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4k views

SPF configuration on exchange hybrid

I am a newbie at Exchange hybrid configuration. I am struggling when I try to find an answer for the situation below. We have an Exchange Hybrid system and use Messagelab as the smart host for spam ...
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1answer
1k views

Possible to have a cloud primary mailbox with an on-prem archive mailbox?

I have a customer that wants to migrate their users primary mailboxes from Exchange 2016 to Office 365-Exchange Online but leave their archive mailboxes on-prem. I haven't been able to decipher what ...
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3k views

Edge Transport Server missing from Hybrid Configuration Wizard

After initially running the Hybrid Configuration Wizard (but not migrating any mailboxes) we've since added an Edge Transport Server to our Exchange 2010 SP3 RU13 environment. The intention being to ...