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Random Musings on Exchange and Virtualization

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  • Blog Post: Microsoft Certified Master – 5 Years On

    Time flies. It’s now been 5 years since I completed the Exchange 2007 Microsoft Certified Master course in not so sunny Redmond. That was MCM rotation 4, which was the last Exchange 2007 rotation. If memory serves me correctly we started on the Monday the 2nd of November 2009 and finished on Saturday...
  • Blog Post: Retrieving Cluster Error 1135 From Servers

    In some of the recent posts you will have noted that there have been some issues with VMware , and also network cards dropping packets in packets received discarded . One symptom of this is that nodes will be removed from the cluster and EventID 1135 is logged into the System log. EventID 1135 states...
  • Blog Post: Critical Schannel Vulnerability - MS14-066

    In the November 2014 security bulletin there were 14 updates released. The updates resolved security issues in IE, OLE and Schannel. It is the latter that is worth calling out for attention since this is the basis of the Microsoft implementation of SSL. Exchange makes heavy use of SSL, and is typically...
  • Blog Post: Disabling IPv6 And Exchange – Going All The Way

    When we are performing the Exchange Risk Assessment, one of things PFE love to check is how servers have been configured for IPv6. There have been numerous occasions where we have found servers whose admin has said that they have disabled IPv6, but when you look at the server it is not really disabled...
  • Blog Post: Awareness – Is Your Federation Trust Metadata Updated?

    Imagine the scenario -- all is working well with your Office 365 hybrid solution until you come into the office tomorrow morning and you get calls saying on-premises users are unable to see the free/busy information for mailboxes in Office 365. While this sounds like a bad dream, this reality could come...
  • Blog Post: Using ADPropertiesOnly With Exchange Virtual Directory Cmdlet Shows False Positives

    Previously we discussed an interesting feature of the Exchange virtual directory cmdlets where they check data stored in AD, rather than making a trip to the server and querying its IIS metabase. For the details on this, please read the original post here: Slow Response To Exchange Virtual Directory...
  • Blog Post: Awareness – Litigation Hold Or In-Place Hold Folder Deletions Not Preserved in Exchange 2013 OWA

    Please be aware of an emerging issue in Exchange 2013 and Exchange Online. In a delegate scenario it is possible that OWA can be used to delete a folder from the other user’s mailbox and not appear in the Deleted Items section of the recoverable items folder. This is covered in KB 2996477 -- Folder deletions...
  • Blog Post: Exchange 2013 CU6 Released

    Exchange 2013 CU6 has been released to the Microsoft download centre! Exchange 2013 has a different servicing strategy than Exchange 2007/2010 and utilises Cumulative Updates (CUs) rather than the Rollup Updates (RU/UR) which were used previously. CUs are a complete installation of Exchange 2013 and...
  • Blog Post: How To Rename DAG Network Using PowerShell

    Quick post for a Friday! A customer had an “interesting” issue where the DAG networks were not being displayed inside the Exchange Management Console. The underlying reason is because the implemented firewalls between Exchange servers, and then restricted network traffic between Exchange...
  • Blog Post: Retrieving Packets Received Discarded Perfmon Counter From Multiple Servers

    Whilst working on a customer’s Exchange 2010 DAG issue, I wrote a quick script to quickly grab some performance monitor counters from all of their Exchange servers. The issue that we were investigating was related to discarded packets when the VM was running on a certain hypervisor host. The customer...
  • Blog Post: Exchange and AntiVirus Exclusions – Still A Critical Conversation

    In a previous post we saw the Microsoft requirements for the exclusions that must be added to file system AV on Exchange servers. In a recent CritSit, basically an uber urgent support request where the customer is down or as good as down, I also got to examine some of the other causes for file system...
  • Blog Post: Exchange 2013 CU5 Released

    Exchange 2013 CU5 has been released to the Microsoft download centre! Exchange 2013 has a different servicing strategy than Exchange 2007/2010 and utilises Cumulative Updates (CUs) rather than the Rollup Updates (RU/UR) which were used previously. CUs are a complete installation of Exchange 2013 and...
  • Blog Post: Exchange 2013 SP1 Architecture Poster

    In the smelly MEC 2014 man purse, there was  a shiny Exchange 2103 SP1 architecture poster.  The MEC attendees were the first ones to get the update to the older Exchange 2013 RTM poster, which is now published for everyone!  I created a deep zoom of the poster so that it is easy to scroll...
  • Blog Post: Outlook Unable To Connect To Exchange –Default Gateway Not Found

    When doing some recent customer work for Exchange 2013, I ran into an annoying issue in one of my labs. Outlook 2013 refused to connect to Exchange 2013. A witch hunt then ensued to ensure that all of my Outlook Anywhere, Autodiscover and authentication settings were correct. Well it turns out that they...
  • Blog Post: Exchange 2013 Tip Of The Day – 76 To 93

    The other Exchange 2013 tips of the day posts can be found here: Exchange 2013 Tip Of The Day – 1 To 25 Exchange 2013 Tip Of The Day – 26 To 50 Exchange 2013 Tip Of The Day – 51 To 75 To obtain the listing below, the following command was used: $Int = 76;While ($Int...
  • Blog Post: Exchange 2013 Tip Of The Day – 51 To 75

    The other Exchange 2013 tips of the day posts can be found here: Exchange 2013 Tip Of The Day – 1 To 25 Exchange 2013 Tip Of The Day – 26 To 50 Exchange 2013 Tip of The Day – 76 To 93 To obtain the listing below, the following command was used: $Int = 51;While ($Int -le 75){Get-Tip $Int; Write-Host;...
  • Blog Post: Exchange 2013 Tip Of The Day – 26 To 50

    The other Exchange 2013 tips of the day posts can be found here: Exchange 2013 Tip Of The Day – 1 To 25 Exchange 2013 Tip Of The Day – 51 To 75 Exchange 2013 Tip of The Day – 76 To 93 To obtain the listing below, the following command was used: $Int = 26;While ($Int -le 50){Get-Tip $Int; Write-Host;...
  • Blog Post: Exchange 2013 Tip Of The Day – 1 To 25

    The Exchange Management Shell helps us discover the amazing capabilities of PowerShell. One way it does this is by displaying a tip of the day so that we are introduced to concepts and topics that inevitably will come in handy one day! The other Exchange 2013 tips of the day posts can be found here:...
  • Blog Post: Exchange PowerShell Filtering Examples

    When writing Exchange PowerShell scripts it is very useful to target specific machines to either query or set their properties. Thus the ability to generate a query that effectively targets the correct machines is a very good thing to know! The reason I'm posting this is that I see a lot of people...
  • Blog Post: Exchange 2007 And 2013 Outlook Anywhere Co-Existence

    Since we are still in the early stages of the year, and Exchange 2013 SP1 is now available, we will see lots of migrations to Exchange 2013. Exchange 2013 can be deployed into an existing Exchange organisation where Exchange 2007 SP3 RU10 + and/or Exchange 2010 SP3 exists. Let's look at an issue...
  • Blog Post: Exchange 2013 SP1 Released

    Exchange 2013 SP1 has now been released to the Microsoft Download Center ! The build number for Exchange Server 2013 SP1 is 15.00.0847.032 Update 5-3-2014: If you are using custom transport agents please see Third-party transport agents cannot be loaded correctly in Exchange Server 2013 The script you...
  • Blog Post: Exchange RBAC Primer

    After publishing some recent articles on RBAC, there was some feedback that a primer on RBAC would also be welcomed. So here it is! What is RBAC? It is not Really Boring Access Control. RBAC = Role Based Access Control. As a concept it is not new , however Exchange 2010 was the first time that it has...
  • Blog Post: Exchange Upgrades–The Point Of No Return

    When designing an upgrade strategy from an older version of Exchange to a newer one, a question that needs to be addressed is do we need to introduce a version of Exchange that may not currently be present? This may be when upgrading from Exchange 2003 to Exchange 2010. If that organisation does not...
  • Blog Post: Slow Response To Exchange Virtual Directory Cmdlets

    Some folks in the field may have seen this before, but it’s worth bubbling up to make sure everyone is aware of it! I was sitting with one of my esteemed consulting colleagues today and he remarked that it was talking a long time to run one of his Exchange PowerShell scripts. The customer in...
  • Blog Post: Exchange Server 2013 Forums Available on TechNet

    Update : Since Exchange 2013 has now been released the preview forums has been retired, and the RTM forums can now be found here . Since the Exchange 2013 Preview is now available it is a great chance to see how the next version of Exchange is shaping up! If you are running to issues then head...