Office 365 users can’t see free/busy of on-premises users

The past few days I was working on making an on-prem Exchange Server 2013 SP1 environment hybrid with the Office 365 tenant. You would expect that running the Hybrid Configuration Wizard (HCW) would be it, after setting all the requirements as they should. Unfortunately after running the HCW, Office 365 mailboxes couldn’t access free/busy information of on-prem mailboxes. The other way round was functional. Enter troubleshooting mode! I will spare you the whole story and summarize it to the basics.

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From open source groupware solution Zarafa to Exchange: Part 2, Active Directory

See also Part 1: A New Beginning When using Zarafa there are several possible directory services you can use for authentication. I will restrict this post to situations relevant to Active Directory (AD) integration. Even if you did not use Active Directory (or Zarafa for that matter) previously, I believe this post still contains valuable information. Getting to know your current environment is key if you want to change it. If you migrate from one version of a product to

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Disable Offline OWA in Exchange 2013

Although the Offline OWA functionality in Exchange 2013 is a great addition for those that cannot use Outlook (Anywhere with Cached Mode), but are frequently without internet. However, as the browser database in which Exchange OWA stores it’s information isn’t encrypted, it can be a security issue. It can be turned of via the Exchange Admin Center (EAC) via Permissions>Outlook Web App Policies and then edit the policies by double-clicking them. Navigate in the pop-up window to Offline Access and

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Next week I’ll be at the Microsoft Exchange Conference 2014!!!

The Microsoft Exchange Conference 2014 will start in a week! As with the previous version I’ll be there too! For those attending, this is my MEC2014 profile (login required). I’ll arriving Saturday late evening and I’ll leave the next Saturday in the afternoon. Unfortunately no solo sessions, but I will certanly be there for The UC Architects Live session (code: ARC.IN.306 currently planned on wednesday afternoon)! Between the official event parties etc., ENow will also sponsor a The UC Architects party!!! Registration is required and

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Be careful with Outlook customizations! Use AutoDiscover!

During a migration from Exchange 2007 to 2013, we moved several mailboxes as pilot users. Coexistence was fully configured and on my test machine everything worked fine. However, the pilot users had trouble connecting with Exchange 2013 after their mailbox was successfully moved to Exchange 2013 servers. OWA and ActiveSync worked without any hitch. The problem was that Outlook would update its server settings, even though (internal) AutoDiscover worked perfectly. Outlook seemed to retain its settings for Exchange 2007, which

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The UC Architects Episode 35: Service Packed! is available now!

A few days ago episode 35 of The UC Architects podcast went live! Service Packed! With Steve Goodman hosting, joined by John Cook, Michael Van Hybrid, Michel de Rooij, Serkan Varoglu, Ståle Hansen and yours truly. Our editor was the legendary Andrew Price. In this episode we talk (a lot) about Exchange Server 2013 Service Pack 1, a quick review of the new features and the detected Transport bug and how we feel about that one. If you have plans

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Exchange 2013 SP1 is out! And now?

Yesterday the Exchange Team finally released Exchange 2013 Service Pack 1 (SP1). And even as promised within early 2014! Nothing like a major release to get those blog writing blocks lifted . Download SP1 here and see their blog here. Be sure to check out the release notes and the What’s New page. So, what now? Hopefully many of you have installed previous Cumulative Updates (CU). But even if you haven’t (although I hope you’re not still stuck with CU1

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From open source groupware solution Zarafa to Exchange: Part 1, A New Beginning

This blog series will describe my experiences and lessons learned from migrating the Zarafa Groupware solution to Microsoft Exchange, specifically Exchange Server 2013. I’ve done this twice now and although some things are quite obvious, there are some gotchas and it might be a daunting endeavor. A normal transition from Exchange to Exchange already requires good planning, but it is even more important when migrating from a third party solution that isn’t supported by any available migration tool like Quest.

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Can you use ActiveSync to measure market shares?

Computerworld.com published an article this week called “iPhone, iPad dwarf mobile rivals in small- and mid-sized firms”. It stated: Apple has won the hearts and minds of small- and mid-sized businesses, which have overwhelmingly adopted Cupertino’s mobile devices over rivals powered by Android or Windows, an Exchange hosting vendor said last week. Well, my interest was peaked. Mobile devices and Exchange, that is a combination for which I have a soft spot! However reading the article and statements made, I

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