Microsoft Exchange and Active Directory Blog
Today Microsoft has released new CUs for Exchange Server 2016 and Exchange 2019. The CU 6 for Exchange 2019 can only be downloaded from the VLSC Portal, Action Pack or Visual Studio Portal. The CU 17 for Exchange 2016 is still available for regular download: Exchange Server 2019 Cumulative Update 6 VLSC ... Read more
I have already written about DKIM in conjunction with Sophos UTM here. Here is an article about Exchange and DKIM. Mails can receive a DKIM signature directly on the Exchange server, so an additional AntiSPAM solution that adds the DKIM signature is not necessary. To add DKIM signatures directly on the Exchange ... Read more
Who isn't familiar with the evil "Reply all" function in Outlook? An important piece of information is quickly sent to the whole company, and then there's a flood of replies because the recipients use the "reply all" function: Depending on the size of the organization, such a flood of emails can generate a few million emails and thus ... Read more
As already announced here, this is the first article on the topic of Exchange Server Monitoring. This article is about the PRTG software from Paessler. PRTG has been on the market for quite a long time and I would classify it as a "classic" monitoring tool. PRTG is therefore well suited for monitoring hardware, ... Read more
A long time ago I had created a small script (Exchange Monitor) which allows a very rudimentary monitoring of Exchange servers. However, the script no longer works with the current Exchange Server versions. I had actually planned to revise the script or I had already experimented with a revised version. Unfortunately, the first ... Read more
Microsoft has released new CUs for Exchange Server 2019 and Exchange Server 2016 today. The CU 5 for Exchange 2019 fixes problems with the search in Outlook when Outlook is operated without cache mode, so the update has probably already been eagerly awaited by some. The CU5 for Exchange 2019 is available as usual ... Read more
Microsoft released a new security update for Exchange Server 2016 and 2019 yesterday. The update closes a vulnerability classified as "Important". Description of the vulnerability: A cross-site scripting (XSS) vulnerability exists when Microsoft Exchange Server does not properly sanitize a specially crafted web request to an affected Exchange server. An authenticated attacker could exploit the vulnerability by ... Read more
Exchange Servers store a large part of the configuration in the Active Directory, which is why a backup of the Exchange Server does not include the configuration of the Exchange Server, but usually only the data (such as the mailboxes). Important settings such as permissions on mailboxes or settings for the virtual directories are stored in the Active Directory. Especially when ... Read more
Yesterday, Microsoft released a new update (CU) for Exchange Server 2019 and Exchange 2016. Here is an overview of the changes and fixes in the new CU: Cumulative Update 4 for Exchange Server 2019 Cumulative Update 15 for Exchange Server 2016 The CU 4 for Exchange 2019 can still only be downloaded via VLSC, MSDN ... Read more
I have just uploaded a new version of the Exchange Certificate Assistant. The old version still uses the Let's Encrypt protocol ACMEv1, which is no longer supported by Let's Encrypt. The new version 3 of the Certificate Assistant now uses the PowerShell module Posh-ACME to automatically request certificates for Exchange Server via Let's Encrypt. Posh-ACME is ACMEv2 ... Read more
