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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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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1answer
20 views

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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26 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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42 views

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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102 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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415 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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998 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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1answer
1k 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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3answers
136 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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176 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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343 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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415 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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824 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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1k views

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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2k views

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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