Microsoft Exchange and Active Directory Blog
In January, I published the first public version of the Exchange Autodiscover Whitepaper. So far the PDF has more than 5000 downloads, now there is an updated version. The PDF now comprises 64 pages on Exchange Autodiscover, including sample configurations (6 pages more). A revision was necessary, as I had previously only dealt with the topic of split DNS in conjunction with Autodiscover ... Read more
OPNSense is a fork of the well-known open source firewall PFSense, I personally like OPNSense better, the GUI is tidier, there is a REST api and the most important plug-ins are also available. As there is a plugin for HAProxy and also for Let's Encrypt for OPNSense, I have started testing this combination in conjunction with Exchange 2016. OPNSense ... Read more
The Chrome browser reports the following error for websites running on an IIS server on Windows Server 2016: ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY In this case, Chrome does not allow the error to be ignored. The problem also occurs with Exchange 2016 servers installed on Windows Server 2016. The problem lies in old cipher suites and ... Read more
Today an important update was released for the following Exchange Server versions: Microsoft Exchange Server 2013 Service Pack 1 Microsoft Exchange Server 2013 Cumulative Update 14 Microsoft Exchange Server 2016 Cumulative Update 3 It is interesting to note that the Exchange versions are no longer completely up-to-date. There is already CU4 for Exchange 2016, as well as CU15 for ... Read more
In part 1, the basic configuration of Sophos XG in conjunction with Exchange 2016 has already been carried out, but some configuration work is still missing so that Outlook Anywhere, MAPIoverHTTP and the REST Api also work. As already mentioned in part 1, the Sophos templates for business applications are somewhat outdated, so manual improvements are required here. It is somewhat irritating that ... Read more
Sophos has been offering the successor to the UTM, called Sophos XG, for some time now. Sophos's advertising slogan: The next thing in next-gen: ultimate firewall performance, security and control So far, I've steered clear of Sophos XG, as a lot of things didn't really work smoothly in my last test. My last test is ... Read more
After Part 1 described how to create a backup with the Windows Server backup and Part 2 how to restore a mailbox from the backup, Part 3 now describes the other options. You don't always want to overwrite an existing mailbox with the mailbox from the backup, other options for restoring are described below. ... Read more
This series of articles is about backing up and restoring Exchange databases and mailboxes using Windows Server Backup. The test environment consists of a Windows Server 2016 with Exchange 2016 on which the Windows feature "Windows Server Backup" has been installed. The Windows Server Backup is a simple tool with which Windows Server and Exchange can be backed up and ... Read more
As promised, I'm adding the Jetstress test here to compare ReFS and NTFS. I tested once with a database and logs on one volume and 4 databases with separate log and database volumes (8 volumes). All volumes of the Windows VM were stored on the same XtremIO LUN. There were no other changes. ... Read more
Problems with the system mailboxes are often only noticed when new Exchange servers are to be installed, and the installation then usually fails. Faulty system mailboxes can also occur if a database containing the mailboxes has been deleted. Normally Exchange will not delete a database if system mailboxes are still present. In the case of a corrupt database that has been manually ... Read more
