Windows Server 2016: New Technical Preview (TP5)

Microsoft has released a new version of Windows Server 2016 as a Technical Preview today. The Technical Preview 5 of Windows Server 2016 is available for download for testing purposes: https://www.microsoft.com/en-us/evalcenter/evaluate-windows-server-technical-preview The TP5 can also be found in the MSDN: The RTM release of Windows Server 2016 is planned for the fall. A list of all new features can be found here: ... Read more

Exchange Autodiscover and Strato Webhosting

If you use a web hosting package from Strato and also operate your own Exchange server, you should pay attention to Autodiscover. In the default setting, autodiscover is activated at Strato, but as an SRV entry and reference to Strato: The activated setting at Strato then refers to the address autoconfigure.strato.de: However, if you operate your own Exchange server and use Strato as a smart host, ... Read more

Free SAN certificates with a 3-year term

In addition to Let's Encrypt, WoSign also offers free SAN certificates for Exchange servers, for example. The advantage of WoSign: The certificates are valid for up to 3 years: WoSign is a Chinese CA whose root certificate can be found in all common browsers and operating systems. Take Windows as an example: WoSign certificates are therefore trustworthy on most devices. Since I ... Read more

Exchange 2016: Share EAC only in the internal network

Like Exchange 2013, Exchange 2016 comes with a web interface for administration (EAC), which can be used to carry out basic administration tasks. However, simple administration via the web interface also entails risks. For example, anyone who makes Exchange 2016 and Exchange 2013 servers accessible on the Internet in order to access OWA, ActiveSync and Outlook Anywhere ... Read more

Sophos UTM 9.4 WAF and Exchange 2016

For Exchange 2010 and Exchange 2013, I had already published articles for Sophos UTM Webserver Protection (WAF) here. However, since Exchange 2016 has now been released and the Sophos UTM is also available in a more up-to-date version, there is another update here. Environment (UTM and Exchange) Exchange Server 2016 CU1 ... Read more

New Exchange Server updates available

New updates for Exchange Server 2007, 2010, 2013 and also for Exchange Server 2016 have been released today: Exchange 2016 CU 1 Exchange 2013 CU 12 Exchange 2010 SP3 UR 13 Exchange 2007 SP3 UR 19 New UM language packs are available here: UM language packs for Exchange 2016 CU 1 UM language packs for Exchange 2013 CU 12 A list of ... Read more

RIP R@y!

Ray Tomlinson died of a heart attack on Saturday. Without him, we probably wouldn't have an @ sign on our keyboards. Ray Tomlinson was the first person to use the @ sign to send an e-mail in 1971. The Wikipedia article is unfortunately very thin: https://de.wikipedia.org/wiki/Ray_Tomlinson Heise writes a nicer obituary: http://www.heise.de/newsticker/meldung/Ray-Heaven-zum-Tode-von-Ray-Tomlinson-3129308.html Rest in peace R@y! (Source: http://openmap.bbn.com/~tomlinso/ray/ka10.html)

Exchange Server: Prevent mail spoofing

Mail spoofing is often used to persuade users to open dangerous attachments in emails. The aim is to make it look as if the email is coming from a colleague or a device such as a scanner or Fax2Mail. Mail spoofing is used to falsify the sender's address so that it looks to the user as if the email is coming from an internal ... Read more