Microsoft Exchange and Active Directory Blog
Currently there seems to be a bug in the Sophos UTM that prevents a TLS connection from being established. The log file of the sender's MTA then contains entries with the message "TLS handshake failed". Here is an example from Clearswift: There is also a message about this in the Sophos forum: https://www.astaro.org/local-language-forums/german-forum/54875-bug-9-210-20-smtp-send-receive.html Apparently ... Read more
The positive feedback on Exchange Monitor 1.0 has encouraged me to develop Exchange Monitor further. I realized that the previous design is not very good for a small monitoring tool. I therefore decided to change the design and the concept for the data. Here are the most important new features: ... Read more
The videos from the Microsoft Technical Summit 2014 in Berlin are available on Channel 9. A total of 46 videos on various topics are available there: .NET Compiler Framework "Roslyn" ASP.Net vNext closing keynote Alive and kicking: .NET vNext at a glance Authentication and single sign-on for mobile, web and desktop applications Automation 2.0 - data center automation in the public (Azure ... Read more
I have already received several inquiries about back pressure. When Exchange is under back pressure, mails are received or sent slowly or not at all. Often the following situation is described: Exchange is no longer sending or receiving mails and the event 15004 is logged, ... Read more
Currently the SChannel Fix (KB2992611) seems to cause problems with SQL and IIS servers. Various sources report problems connecting from Chrome to IIS servers that have installed the update. Exchange 2013 on Server 2012 R2 does not seem to have any problems with the update. OWA with Chrome and Internet Explorer work fine. Apparently in my ... Read more
In Exchange environments with DAG and multiple database copies, the databases should normally be distributed evenly across the database servers. However, this situation can change if a failover has occurred or the databases have been activated on other servers for maintenance purposes. At some point, you may then have a situation where all databases on a server are active ... Read more
The second day of the Microsoft Technical Summit 2014 in Berlin has come to an end for me. This is also the last day for me, because unfortunately I was a bit late and couldn't get a free place for the workshops on the third day. In the keynote, it was quite interesting to see how ... Read more
Microsoft has started to activate Clutter for Office 365 customers. Clutter is designed to help clean up the inbox automatically and distinguish important from unimportant emails. Clutter works in a similar way to some spam filters; emails have to be moved to a folder so that Clutter can "learn". There is an article about this on the Office blog: http://blogs.office.com/2014/11/11/de-clutter-inbox-office-365/ Clutter is ... Read more
The first day of the Microsoft Technical Summit 2014 in Berlin is drawing to a close. Time for a brief summary. The keynote was quite interesting to listen to. Satya Nadella gave it in person: Now the key note is not the most interesting thing about the event for me. The subsequent presentation by Jeff Woolsey was ... Read more
With virtual Exchange 2010 servers on VMware vSphere environments, it can happen that a failover of the databases is triggered during a vMotion process of the Exchange database server. The cause is often the heartbeat timeout when the Exchange VM is moved to another ESX host. It can happen that the switches do not recognize the changed port. Read more
