Exchange 2013/2016: Login via e-mail address (UPN)

Registration for various services and portals on the Internet now uses an e-mail address as the user name. This has a number of advantages for users, because you don't have to think up (and forget) new user names for different portals or services, but always use your e-mail address. Registration via e-mail address is also ... Read more

Let's Encrypt: Free certificates for Exchange Server

Update 12.01.17: This article is outdated, here is an updated version: Exchange 2016: Free certificates from Let's Encrypt The new CA "Let's Encrypt" has been in the public beta phase for a few days now. The aim of Let's Encrypt is to issue SSL certificates easily. The certificates are also free of charge. The CA will ... Read more

Exchange: Delete mails from mailboxes

Bad mails happen in the best of families. Sometimes it is a virus, or an email that should not have been sent. Exchange Server offers the possibility to delete mails from mailboxes. Especially with SPAM or virus waves, it can be very useful to know how to do this. This article applies to Exchange 2010, 2013 ... Read more

Exchange 2016: Allow anonymous relay (5.7.54 Unable to Relay)

Some applications or devices require an anonymous relay to be able to send mails. However, a distinction must be made here between internal relay and external relay. The internal relay, i.e. the anonymous sending of mails to the domains accepted by Exchange, works out-of-the-box: The external relay, i.e. the sending of mails to external users without authentication, however ... Read more

Migration from Exchange 2010 to Exchange 2016 (Part 3)

Here is the third and final part of the migration from Exchange 2010 to Exchange 2016. Part 1 and Part 2 can be found here: Migration from Exchange 2010 to Exchange 2016 Part 1 Migration from Exchange 2010 to Exchange 2016 Part 2 In this part we clean up and uninstall Exchange 2010. Removing the Exchange 2010 databases ... Read more

Migration from Exchange 2010 to Exchange 2016 (Part 2)

Here is the second part of the migration from Exchange 2010 to Exchange 2016. The first part can be found here: Migration from Exchange 2010 to Exchange 2016 Part 1 In this article, the public folders and the mailboxes are migrated. The migration of the public folders can only be done with downtime, so read first, then plan :-) ... Read more

Migration from Exchange 2010 to Exchange 2016 (Part 1)

Foreword Exchange 2016 has been available in its final version since 01.10. Many people will have skipped Exchange 2013 and are currently still using Exchange 2010, for those it is time to plan the migration to Exchange 2016. Exchange 2016 will be the last version to which you can migrate directly from Exchange 2010. This ... Read more

Exchange 2016: Information on coexistence

Two articles worth reading on Exchange 2016 coexistence in conjunction with Exchange 2010 and Exchange 2013 have been published on the Exchange Team Blog. The four articles can be accessed via the following links: http://blogs.technet.com/b/exchange/archive/2015/10/26/client-connectivity-in-an-exchange-2016-coexistence-environment-with-exchange-2010.aspx http://blogs.technet.com/b/exchange/archive/2015/10/28/client-connectivity-in-an-exchange-2016-coexistence-environment-with-exchange-2013.aspx http://blogs.technet.com/b/exchange/archive/2015/10/30/client-connectivity-in-an-exchange-2016-coexistence-environment-with-mixed-exchange-versions.aspx http://blogs.technet.com/b/exchange/archive/2015/10/22/exchange-2016-coexistence-with-kerberos-authentication.aspx The articles cover the topic of coexistence in great detail. I am currently working on an article on the migration from Exchange 2010 to ... Read more

Exchange 2016: This app cannot be run on the PC

Holger encountered a strange error during the installation of Exchange 2016 on Windows Server 2012 R2. The following error message appears immediately after starting Setup.exe: This app cannot be run on your PC Please contact the software publisher to find a suitable version for your PC. Well, that would probably be Microsoft, ... Read more

Exchange 2016: Optimization on VMware ESXi 5.5 / 6.0

Many people will now be running Exchange Server as virtual machines. There are a few things to consider so that Exchange 2016 also delivers optimum performance in a VM. I would like to briefly present the most important ones here: Exchange 2016 on VMware ESXi 5.5 vCPUs: The rule for virtual CPUs is: as much as necessary, as little as possible. This is where ... Read more