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Exchange 2013 and Bugcheck 0x000000ef

After our recent Exchange 2013 rollout, we noticed a problem with the Exchange 2013 servers (virtual guests on a HyperV cluster) experiencing clock drift and ultimately bugchecking (aka blue screen) with 0x000000ef errors. These crashes and clock drifts occurred once every couple of days and quite aside from the crashes, clock drift is a very big deal on any kind of server these days. While the crashes were disruptive in their own right, the potential problems caused by someone having to wait a bit to access their mailbox or receive a message is nothing to the problems that could be caused by the timestamp on an email being a day or two out.

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Exchange 2013 notes Pt. 1 - Certificates

I’m currently heading an Exchange 2007 to Exchange 2013 migration at work and I’m going to share the thoughts and notes that I’ve made on the process so far. The actual install process was fairly painless to be fair, with one CAS and two Mailbox servers currently configured, but I have encountered one problem with certificates that I thought I would share: We required a new Unified Comms certificate as part of the rollout, so I used the Exchange Admin Centre (EAC/ECP) to generate a Certificate Signing Request on the CAS server.

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Stormy weather for cloud providers and users?

So we’re a Mimecast customer and today they had a few problems with their email services in the UK going offline for a large part of the working day. No big deal as such, other than that they make big claims for their own availability and have been quite ready to point out the failings of others in the past - and the responsible people at those others are probably reacting to today’s events by pouring champagne down their throats as fast as they can get the bottles open… well maybe not at Google.

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From Hell's heart, I email thee

My feelings about various email servers I’ve had to do battle with over the years are well known to those people who have worked with me. Imagine my surprise to receive an email that began like this: OS2 wasn't enough for me, I feel the need to go the whole hog and get IBM'd*! As it happens I am now officially using Notes instead of outlook, it's weird in here!

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