Microsoft Exchange and Active Directory Blog
Ingo Gegenwarth has published a very interesting article regarding Exchange on HP Proliant Gen9 servers on his blog "The clueless guy". The article deals with possible performance problems when Exchange is installed directly on HP servers and the default BIOS settings are kept: Exchange performance:HP NUMA BIOS settings So for HP servers and Exchange we recommend ... Read more
As Michel reported on networkguy.de, the HTTP proxy of the UTM has been crashing at irregular intervals since today. A corresponding mail lands in the inbox: Http proxy not running - restarted The problem is due to a faulty pattern update for the UTM which was rolled out by Sophos. In the meantime, a corrected pattern has been published (u2d-appctrl43-9.42). Here is the corresponding ... Read more
The e-mail pickup directory is no longer used very often, but today was another case with a somewhat more special software... The e-mail pickup directory is a normal folder in the file system that is monitored by Exchange for new e-mails, if an e-mail lands in this folder, Exchange will try to deliver the mail. ... Read more
I'm currently working on my private PRTG installation and stumbled across the PRTG IPFIX sensor by chance. IPFIX is a further development of Cisco Netflow and is also used to collect and visualize traffic data within a network. Since the Sophos UTM also supports IPFIX, PRTG can use the IPFIX data ... Read more
Microsoft has released new security updates for Exchange 2010 to Exchange 2016. Specifically, it concerns this security vulnerability: This security update fixes a security vulnerability in Microsoft Exchange Outlook Web Access (OWA). The vulnerability could allow privilege escalation or spoofing attacks in Microsoft Exchange Server if an attacker sends an email with a specially crafted attachment to a vulnerable Exchange ... Read more
In the last article, I had already announced that I would also like to use PRTG to monitor the web server protection of the Sophos UTM. Unfortunately, PRTG only offers generic sensors for the UTM, which makes monitoring a little more difficult. I've made some progress with the Sophos RESTful API, but unfortunately RESTful ... Read more
In this article, I already presented a small script that checks the Exchange HealthCheck URLs. Since I use PRTG for monitoring in my private environment, I used a separate sensor for the HealthCheck URLs. PRTG comes with a whole range of sensors for Exchange Server, but due to the limitation of 100 ... Read more
Microsoft is once again offering free eBooks for download. Some of the eBooks are not completely up-to-date or only contain a few pages, but some are still suitable as a reference work. A total of 380 eBooks can be found at the following link: https://blogs.msdn.microsoft.com/mssmallbiz/2017/07/11/largest-free-microsoft-ebook-giveaway-im-giving-away-millions-of-free-microsoft-ebooks-again-including-windows-10-office-365-office-2016-power-bi-azure-windows-8-1-office-2013-sharepo/ Perhaps you will find something...
A little tip on the side as the question has already been asked several times: Do I also have to consider .NET Framework when installing Exchange Updates (CUs)? Simple answer: Yes! Here is the somewhat more detailed answer: Unsupported NET Framework versions in conjunction with Exchange Server can be quite problematic, as has already been shown in the past: https://www.frankysweb.de/net-framework-4-6-1-nicht-auf-exchange-servern-installieren/ The NET ... Read more
Sophos has today released an update with the version number 9.502-4 for the Sophos UTM. The update is intended to fix a total of 39 problems. Unfortunately, Sophos has not been so lucky with updates for the UTM in the past, so the last update fixed some problems, but also caused new ones. Unfortunately, this makes extensive testing ... Read more
