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Messaging

Items related to messaging services with a focus on Exchange Online (EXO) and Exchange server (on-premises)

0

Out of SSPR Scope User Experience

Posted on 27th February 2023 by Rhoderick Milne [MSFT]

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”

Messaging AAD Connect, Azure
0

Configure On-Premises Exchange For EOP Spam Thresholds

Posted on 23rd January 2023 by Rhoderick Milne [MSFT]
Exchange Online Anti Spam Threshold

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”

Messaging Defender for Office 365, Exchange, Exchange Online, Office 365, Security
0

Kerberos Issues November 2022

Posted on 8th December 2022 by Rhoderick Milne [MSFT]
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”

Messaging, ProTips AD FS, Windows
0

How to Use NsLookup To Check DKIM Record

Posted on 3rd October 2022 by Rhoderick Milne [MSFT]
Check DMARC DNS Record Using NSLookUP

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”

Messaging, ProTips, Security DKIM, Exchange Online, Office 365, Sender Authentication
2

Exchange Server Extended Protection

Posted on 31st August 2022 by Rhoderick Milne [MSFT]
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”

Messaging Exchange, Exchange 2013, Exchange 2013 SP1, Exchange 2016, Exchange 2019
0

Remediate Exchange Security CVE-2022-21978

Posted on 12th August 2022 by Rhoderick Milne [MSFT]
Remediate Exchange 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”

Messaging Exchange, Exchange 2013, Exchange 2013 SP1, Exchange 2016, Exchange 2019
0

Migrate Safe Links Block Settings to TABL

Posted on 20th July 2022 by Rhoderick Milne [MSFT]
Migration of MDO Global Block List 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”

Messaging, Security Defender for Office 365, Exchange Online, Office 365, Security
0

Implementing Exchange DownloadDomain Security

Posted on 20th July 2022 by Rhoderick Milne [MSFT]
Implement Exchange DownloadDomain

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”

Messaging Exchange, Exchange 2016, Exchange 2019
0

Exchange 2019 Point of No Return

Posted on 12th July 2022 by Rhoderick Milne [MSFT]
Exchange 2019 PrepareAD - The Point of No Return

When designing an upgrade strategy from an older version of Exchange to a newer one, a question that needs to be addressed is do we need to introduce … Read the rest “Exchange 2019 Point of No Return”

Messaging Exchange, Exchange 2019
0

Upgrade to Azure AD Connect 2.0

Posted on 3rd July 2022 by Rhoderick Milne [MSFT]
Azure AD Connect Upgrade to 2.X

When delivering Office 365 Security Optimisation Assessments (SOA) to customers, one of the control items is the version of Azure AD Connect deployed a… Read the rest “Upgrade to Azure AD Connect 2.0”

Messaging, Security Azure, Dirsync, Office 365

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