Event ID 12024 – Exchange Hybrid

  In a hybrid mode with Exchange 2010 and when trying to send emails to on premises users the email was not getting delivered.  No bouncebacks or errors, just no delivery. I checked out the connector from 365 to on premises and when validating the connector by setting an email address of an on premises … Continue reading Event ID 12024 – Exchange Hybrid

Certificates for Exchange

I needed to run up a lab environment to test an Exchange 2010 hybrid.  For this I needed certificates but I didn't really want to purchase a SAN cert for what was to be a short period of testing. This came to my rescue;  https://github.com/Lone-Coder/letsencrypt-win-simple/wiki/Create-a-SAN-certificate-for-Microsoft-Exchange-2016,-2013-&-2010

Exchange 2010 – Office 365 Hybrid

Creating an Exchange 2010 to Office 365 hybrid; Login to your Office 365 tenancy - Admin - Exchange Admin - Hybrid - Configure This downloads the hybrid configuration wizard (HCW).  Do the above using IE, initially I used Chrome and I got an error when executing the exe after the download. In first part the … Continue reading Exchange 2010 – Office 365 Hybrid

Free/Busy Exchange Online Hybrid

We have a hybrid Exchange setup with Exchange online.  On premises is Exchange 2016. Users who had been migrated to Exchange online could only see availability of other users and resources that were still on premises.  A check of the organization relationship showed the following; Run the below powershell on your on premises servers and … Continue reading Free/Busy Exchange Online Hybrid

Single Active Directory account not syncing to Azure AD

A single user in AD was not being synced to Azure AD via AAD Connect.  All other users were syncing just fine.  When looking at the account the attribute msExchRecipientTypeDetails was set to 2, which indicates a linked mailbox. We used to use linked mailboxes but stopped doing so quite some time ago.  Obviously this … Continue reading Single Active Directory account not syncing to Azure AD