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Exchange Team Blog
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Released: July 2021 Exchange Server Security Updates

The_Exchange_Team's avatar
The_Exchange_Team
Platinum Contributor
Jul 13, 2021
Microsoft has released security updates for vulnerabilities found in: Exchange Server 2013 Exchange Server 2016 Exchange Server 2019 All versions (Cumulative Update levels) are impacted. ...
Updated Aug 05, 2021
Version 15.0
announcements
Exchange 2013
exchange 2016
exchange 2019
security
setup
Neill's avatar
Neill
Brass Contributor
Aug 03, 2021

Auth Certificate Replication between AD sites.

Note that there is an edge case where a new Auth certificate will NOT successfully replicate to Exchange servers in another site and that is if there is no direct AD site link between Exchange sites. e.g. ExchangeSite1-> non-Exchange AD Site -> ExchangeSite2

 

You would see an Event 2005 - MSExchange Certificate Deployment
Federation or Auth certificate not found: <thumbprint>. Unable to find the certificate in the local or neighboring sites. Confirm that the certificate is available in your topology and if necessary reset the certificate on the Federation Trust to a valid certificate using Set-FederationTrust or Set-AuthConfig.  The certificate may take time to propagate to the local or neighboring sites.

 

You can export the cert (with private key) and import onto a single Exchange server on the other site and Exchange will take it from there.