If you’re migrating to Office 365, you may notice this error message, irrespective of your modality of migration, i.e.e cutover, IMAP or Hybrid mode migrations. The exact error message read: The Subscription for the migration user USER@DOMAIN.COM couldn’t be loaded. The following error was encountered: A subscription wasn’t found for this user.   There are […]

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Office 365 users cannot see on-premises free/busy

by Nicolas Blank on 12/08/2015

Issue My Customer introduced an Exchange 2013 server into the Exchange 2010 based organisation, however found that Inbound Free/Busy tests failed using Office 365 based OWA. The W3SVC IIS logs revealed the following error – the line has been shortened for clarity POST /autodiscover/autodiscover.svc/WSSecurity & ASAutoDiscover/CrossForest/EmailDomain//15.01.0225.018 – 500 0 0 124 Cause The Exchange 2013 […]

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When Running the Hybrid mode wizard in Exchange 2013, occasionally you’ll find that the certificate dropdown selector within the wizard is empty, even though you’ve confirmed that the certificate is a valid third party certificate services have been assigned to the same certificate in Exchange with a screen which looks as follows:   We can […]

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On Mon, Jan 26 2015 17:00 (UTC) it will be my privilege to present “Getting Started with Azure Infrastructure” on behalf of the PASS Cloud Virtual Chapter In the webinar I’ll cover the basics on getting started with Azure virtual machines. I’ll cover topics such as Machine sizing administration via PowerShell and the GUI Networking […]

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Most decisions in my life revolve around requirements, I feel so strongly about requirements, that the first Chapter in the book Microsoft Exchange Server 2013: Design, Deploy and Deliver an Enterprise Messaging Solution was dedicated to requirements. As with most IT Professionals, I’m often asked for my opinion on the “best” phone, laptop, GPS, health […]

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Hybrid Cloud – What does it mean for you?

9 September 2014

A few years ago, “cloud” was mostly considered the originator of precipitation of any sort. We talked about “clouds” with silver linings, earth bound forms of the same, such as mist or fig, and even the “fog of war”. We now rate clouds in terms of computing and storage capacity. Before “cloud” was hip, we […]

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Business Connection suffers the wrong kind of loss

13 June 2014

I’m writing this post on the passing of Leetile Benjamin Mophatlane, who up until a few days ago headed BCX, the largest African integrator, who passed away suddenly on the 11’th of June 2014. As a South African, and as a business owner, I wish to thank Benjamin Mophatlane for what he accomplished for African IT […]

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Book Review:Microsoft Exchange Server 2013 PowerShell Cookbook: Second Edition

30 August 2013

I reviewed the first edition of this book back in 2011, and must admit that I enjoyed the opportunity to review the new edition, for the same reasons that I enjoyed the first edition. Both the 2010 and 2013 PowerShell Cookbooks take the reader on a journey from knowing just enough about PowerShell to find the […]

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Blue Screen of Death on DAGs

30 May 2013

It’s a disconcerting event when one day one of your Exchange 2010 SP1 or later DAG members blue-screens. We have a wide range of emotions that accompany one of these event’s including a sense of dread and an “OH NO” sense of something wrong, since after all, it IS a critical application AND it’s meant […]

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Office 365, RBL and rejections

13 August 2012

Occasionally during your working day, you may find that email is rejected after is it sent with a notice similar to the following: Delivery has failed to these recipients or groups: Nicolas Blank Your message wasn’t delivered due to a permission or security issue. It may have been rejected by a moderator, the address may […]

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