Exchange 2019 CU13 Released (2023 H1)
Exchange 2019 CU13 has been released to the Microsoft Volume Licensing Center and the public Microsoft Download site! Exchange 2019 has a different s… Read the rest “Exchange 2019 CU13 Released (2023 H1)”
Messaging
Items related to messaging services with a focus on Exchange Online (EXO) and Exchange server (on-premises)
End of Exchange 2013 Support
Today Exchange 2013 reaches the end of the road and it will transition out of extended support. Hopefully everyone has migrated to a newer version an… Read the rest “End of Exchange 2013 Support”
Out of SSPR Scope User Experience
Azure AD Self Service Password Reset (SSPR) has the ability to restrict which group of users are able to perform SSPR tasks. It is a slightly limited… Read the rest “Out of SSPR Scope User Experience”
Configure On-Premises Exchange For EOP Spam Thresholds
A common issue when deploying Exchange Online Protection (EOP) and Microsoft Defender for Office 365 (MDO) with on-premises Exchange is making Exchang… Read the rest “Configure On-Premises Exchange For EOP Spam Thresholds”
Kerberos Issues November 2022
The November 8, 2022 and later Windows updates address a security bypass and elevation of privilege vulnerability with Authentication Negotiation by … Read the rest “Kerberos Issues November 2022”
How to Use NsLookup To Check DKIM Record
There are a multitude of online tools that help diagnose issues with various mail services, but understanding what these tools actually check is valua… Read the rest “How to Use NsLookup To Check DKIM Record”
Exchange Server Extended Protection
Extended Protection uses service binding and channel binding to help prevent an authentication relay attack. In an authentication relay attack, a clie… Read the rest “Exchange Server Extended Protection”
Remediate Exchange Security CVE-2022-21978
The May 2022 security update for Exchange Server 2013, 2016 and 2019 resolved CVE-2022-21978. A common issue is that admins are only doing part of th… Read the rest “Remediate Exchange Security CVE-2022-21978”
Migrate Safe Links Block Settings to TABL
Note that there have been changes to Safe Links policy for Microsoft Defender for Office 365 (MDO).
Previously you could add URLs to the Safe Links pol… Read the rest “Migrate Safe Links Block Settings to TABL”
Implementing Exchange DownloadDomain Security
In the field, I’m seeing multiple customers that are struggling to implement the DownloadDomain feature. It does require a little prep work and it is … Read the rest “Implementing Exchange DownloadDomain Security”