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Random Musings on Exchange and Virtualization

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  • Blog Post: PowerShell Script To Get Exchange 2010 Active CAS Connections

    Purpose of this script is to report on particular performance monitor counters for Outlook RPC Client Access, OWA and Exchange ActiveSync on multiple servers. This was required as during the course of the year there have been a few issues where the third party load balancer device was not really doing...
  • Blog Post: Exchange 2010 SP3 RU8 Released

    The Exchange team today announced the availability of Update Rollup 8 for Exchange Server 2010 Service Pack 3 . RU8 is the latest rollup of customer fixes available for Exchange Server 2010. The release contains fixes for customer reported issues and previously released security bulletins.  In addition...
  • Blog Post: Exchange ServerName Points To Wrong Or Decommissioned Server

    This post was promoted from the draft bin to production after a customer visit a couple of weeks ago. When onsite we were looking at how the environment was configured. The admins had written a series of scripts to determine the environment state which was excellent to see! One thing that they had assumed...
  • 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: Set AdminSessionADSettings ViewEntireForest To True By Default

    In Exchange 2010 the Set-AdServerSettings cmdlet is used to manage the AD environment in the current Exchange Management Shell (EMS) session. In Exchange 2007 there was a variable called AdminSessionADSettings for the same purpose. Exchange admins normally use the Set-AdServerSettings cmdlet to change...
  • Blog Post: Exchange 2010 SP3 RU7 Released

    The Exchange team today announced the availability of Update Rollup 7 for Exchange Server 2010 Service Pack 3 . RU7 is the latest rollup of customer fixes available for Exchange Server 2010. The release contains fixes for customer reported issues and previously released security bulletins. For example...
  • 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 Scripting Agent - The Power Of Script

    Exchange 2010 introduced a very interesting feature – the Scripting Agent. The intent for this component is to provide extensibility to the base management tools and ensure consistency for the execution of cmdlets in the environment. The feature is not enabled by default and you must manually enable...
  • Blog Post: Exchange 2010 SP3 RU6 Released

    The Exchange team today announced the availability of Update Rollup 6 for Exchange Server 2010 Service Pack 3 . RU6 is the latest rollup of customer fixes available for Exchange Server 2010. The release contains fixes for customer reported issues and previously released security bulletins. For example...
  • Blog Post: End Of Exchange 2010 SP2 Support

    Time files and we are now at the end of the Exchange 2010 SP2 support lifecycle. And as previously discussed Windows XP and Office 2003 left extended support yesterday. It seems like only yesterday when Exchange 2010 SP2 was released in November 2011, The support lifecycle marker is the Exchange 2010...
  • 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 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 have! 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 2010 Tip Of The Day – 76 To 101

    For the final gripping chapter, here are tips #76 to 101 for your PowerShell pleasure! For the related articles in this series please see: Tips 1 – 25 Tips 26 - 50 Tips 51 – 75 Tip of the day #76: Exchange 2010 uses management role groups and management role assignment policies...
  • Blog Post: Exchange 2010 SP3 RU5 Released

    The Exchange team today announced the availability of Update Rollup 5 for Exchange Server 2010 Service Pack 3. RU5 is the latest rollup of customer fixes available for Exchange Server 2010. The release contains fixes for customer reported issues and previously released security bulletins. The astute...
  • Blog Post: Exchange 2010 Tip Of The Day – 51 To 75

    Here are the Exchange 2010 tips of the day from number 51 to 75. For the related articles in this series please see: Tips 1 - 25 Tips 26 – 50 Tips 76 - 101 Tip of the day #51: Want to determine whether a server is running Exchange Server 2010 Standard Edition or Exchange Server 2010 Enterprise Edition...
  • Blog Post: Exchange 2010 Tip Of The Day – 26 To 50

    Leading on where the previous post left off, here are the Exchange 2010 tips of the day from number 26 to 50. For the related articles in this series please see: Tips 1 – 25 Tips 51 – 75 Tips 76 - 101 Tip of the day #26: Forget a property name? Not a problem because you can use wildcard characters to...
  • Blog Post: Exchange 2010 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! Since I had not see a complete list of the Exchange 2010 ones, I...
  • 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...