Top 10 Moments in 20 Years of Exchange Server – You Had Me At EHLO…

I can’t believe it’s been 20 years.  This video requires a stern #NerdAlert

Source: Top 10 Moments in 20 Years of Exchange Server – You Had Me At EHLO…


March 2016 Quarterly Updates for Exchange Released

Microsoft today released the latest Cumulative Updates for Exchange 2007, 2010, 2013 and 2016.

New for Exchange 2016 only, is the option to download the updates as a single ISO file instead of a self-extracting package.  Copying a single ISO over the network from one server to another is quicker and more efficient than copying the self-extracting package or the thousands of extracted files.

Updates of note this time around:

  • Updated OWA S/MIME Control certificate
  • New distribution package for Exchange 2016
  • Change to mailbox anchoring for remote PowerShell
  • 17 new languages supported for OWA
  • Support for Standalone Hybrid Configuration Wizard in Exchange 2010

Microsoft is working on building in support for .Net 4.6.1 in the next quarter’s Cumulative Updates.  So, avoid installing that version of .Net on ANY Exchange server for the time being.

For more info and download links for the updates, follow the links below:

As a side note, yesterday (March 14th, 2016) marked the 20th anniversary of the first public version of Exchange (v4.0) Released To Manufacturing (RMT’d).

It’s been a long journey from the old MS Mail to Exchange Online/Office 365.  Here’s to the next 20 years!

Happy Birthday Exchange Server!

Update Send Connector SSL Certificate for Hybrid Configuration

​Recently had a customer with an Exchange 2013 Hybrid config require updating an expired SSL certificate.  When they imported the new certificate and assigned it SMTP services, mail flow from on-premises to Office 365 stopped.

This was because the on-premises send connector to Office 365 was still configured to look for that expired certificate (which had also been deleted already).

The fix was to perform the following:

  1. Open Exchange Management Shell on the on-premises Exchange server
  2. Run Get-ExchangeCertificate, and note the Thumbprint of the correct certificate to be used. 
  3. Run $cert = Get-ExchangeCertificate -Thumbprint <thumbprint>
  4. Set a new variable and assign it the concatenated values of the Issuer and Subject values of the certificate (must also include <I> and <S> before each field):
    $TLSCert = (‘<I>’+$cert.issuer+'<S>’+$cert.subject)
  5. Update the send connector with the new values
    Set-SendConnector -Identity “Send Connector Name” -TLSCertificateName $TLSCert

After completing this, any queued mail destined for the Office 365 tenant should begin flowing

Microsoft Releases Exchange 2013 Server Role Requirements Calculator

Finally!  The long-awaited role requirements calculator was released today by Ross Smith IV via Microsoft’s Exchange Team Blog.

You can download the calculator here and read Ross’ article here.

Unlike the previous version of the calculator for Exchange 2010 (which only focused on the Mailbox server role), the new requirements calculator includes sizing recommendations for both the Client Access role and the Mailbox role for Exchange 2013.

Microsoft continues to recommend deploying multi-role servers (installing CAS and Mailbox roles both on the same server).


Manually Switch OWA UI to Tablet or Mobile Layout in the browser

The New Office 365 and Exchange 2013 have some significant improvements in the Outlook Web App (OWA) experience. One of the most significant changes is enhanced support for increasingly popular devices such as tablets and mobile phones.

With Exchange 2013, part of the New Office 365, OWA now senses if its being run in a tablet or mobile device web browser and automatically changes the UI layout to provide a better experience on that device. Microsoft announced this functionality in an Exchange Team Blog post last August.

However, you don’t have to be using either of those devices to see these two new UI formats. You can see them in your desktop browser by appending the following at the end of the OWA URL in the address bar of your browser:

for the tablet layout
for the mobile phone layout.
(For example:

This is particularly useful as the Safari for Windows browser only supports the OWA Light experience; but I’ve been able to get it to display the enhanced tablet layout in Windows with my Office 365 mailbox.

Below is the standard Desktop Layout:

Appending /?layout=twide in the URL in my address bar results in this format:

And if I use
in the URL I get the mobile format:

Proof this works with Safari for Windows is below. Keep in mind, that the ability to render the Tablet or Mobile UI in Safari for Windows may be based on the patch level of the servers on which your mailbox resides. Microsoft is continually rolling out new features and patches to the Office 365 farm so this may be evidence of a new feature that’s coming in a future Cumulative Update (CU) that’s not fully rolled-out yet.