Microsoft Exchange and Active Directory Blog
It's been a while since the last article on Kemp and Exchange, so here's an updated version. For this test, I used a Kemp Loadmaster VLM-5000 (which is available for free with people with MCP ID for the HomeLab) and Exchange 2019. The Loadmaster firmware used is 7.2.48. The Loadmaster ... Read more
Microsoft has released a new security update for Exchange Server 2013 to 2019 (CVE-2019-1373). The update closes a vulnerability that, in the worst-case scenario, could allow code to be executed remotely. Microsoft classifies the severity of the vulnerability as critical. The update should therefore be installed as soon as possible. Microsoft provides the following details on ... Read more
Here's another little problem I stumbled across today. During the migration from Exchange 2010 to Exchange 2016, a user was no longer able to receive emails from external senders (SenderNotAuthenticatedForMailbox) after the spam filters were switched to the Exchange 2016 servers. This problem only occurred when the mail routing was switched to the Exchange 2016 ... Read more
I have just uploaded version 3.6 of the Exchange Reporter. Exchange Reporter 3.6 includes the new module "NoSpamProxy". This means that Exchange Reporter can now also retrieve statistics from NoSpamProxy and display them in the report. Here is an example of the NSP module: The NoSpamProxy module displays the following statistics: Overview of mail statistics Overview of large files ... Read more
Small warning regarding Apple devices and iOS 13. Apparently an old bug from iOS 6 times has returned and is causing trouble again in iOS 13. I warned about the problem "back then" here: Exchange 2007/2010: ActiveSync and iOS 6 bug With Apple iOS 13, too, there are more and more reports that there are ... Read more
Some time ago I had already pointed out the following error, here in connection with Exchange 2013: Exchange 2013: 451 4.7.0 Temporary server error. Please try again later. PRX2 If emails cannot be delivered and Exchange displays the error "451 4.7.0 Temporary server error. Please try again later. PRX2" in the queues, it is possible that ... Read more
During the installation of CU14 for Exchange Server 2016, I encountered the following error. The required schema update could not be performed either from the setup GUI or via shell. The setup aborts directly at "Step 1 of 18: Preparing the organization" with the following error: Here again the error message as text: 1 ... Read more
Today the CU3 for Exchange Server 2019 and the CU14 for Exchange Server 2016 were released. The Exchange 2019 CU3 is available for download in the VLSC, Visual Studio Subscription and Action Pack. Here are the details with the changes and fixed issues: Cumulative Update 3 for Exchange Server 2019 Cumulative Update 14 for Exchange Server 2016 ... Read more
Two vulnerabilities in Exchange Server 2016 and Exchange Server 2019 are closed with corresponding security updates. These are the two vulnerabilities: CVE-2019-1233: Microsoft Exchange Denial of Service Vulnerability CVE-2019-1266: Microsoft Exchange Spoofing Vulnerability Both vulnerabilities have an "Important" rating. Details on the vulnerabilities can be found at the links above. Here you can download the ... Read more
After I released a new version of the Exchange Reporter on June 27, 2019, a few bugs have been fixed in the current version 3.6. Here is an overview of the changes: New functions FTP upload function (thanks to Daniel) Bugfixes Rblreport: Blacklist bl.spamcannibal.org removed, as it no longer exists VmwareReport: PowerCli is now loaded as a module (thanks to ... Read more
