4133 Database one datacenter health check failed. 4376 Database one datacenter available copy health check failed.

  “Every day brings a new challenge…” I am still convinced, that whoever said that first, was an Exchange Server Administrator… If you wake up one day and find these two beautiful events in your Application Logs, no need to wonder:   4133 Database one datacenter health check failed. 4376 Database one datacenter available copy…


Exchange 2013 Malware Engine Updates Troubleshooting

As we have introduced Anti-malware filtering by default in Exchange 2013 we have noticed that some Exchange servers fail to update the engines. We do have a couple of scripts designed to manage Anti-malware filtering, all these scripts are located in the Scripts folder of Exchange 2013 so you have to go the folder by…

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How to: RBAC

The topic of this blog is to achieve a RBAC-based solution through which we can limit, or split the access administrators have on a set of databases. In laymen terms we will have two groups of administrators: 1) The first group is able to access any database and perform actions on it (we will call…


OAB Download and BITS Service

I’ve recently stumbled upon a scenario related to downloading the offline address book which might cause confusion and hopefully this blog article will shed some light as to what is happening. All users started to complain that they are unable to perform a download of the offline address book and they are hitting the following…

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More on RBAC and customizing new roles for specific needs

RBAC roles are used by the new version of Exchange and some customers highly use them for achieving different tasks. However, when coming to the implementation or defining different management roles and entries, management groups, things are not every time that clear. By default, each user has the “Default Role Assignment Policy”, which grants the…


Exchange 2013 Managed Availability HealthSet Troubleshooting

Knowing how to deal with annoying HealthSet's was scary at the beginning of my experience with Exchange 2013. The new introduced feature called Managed Availability, is a built-in monitoring system that can take recovery actions that can cause serious issues trying to solve a small issue. There are 3 types of components that can be…

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Exchange 2010 mailflow troubleshooting guide

I recently had a couple of cases where E-Mails were not being processed from the queues anymore causing mailflow issues and new e-mails were building up in the submission queue. As a result of those cases I have created a guide for troubleshooting such issues and have documented the main steps:   First of all…


More on Exchange Retention and Archiving Policies/troubleshooting

As the Exchange Retention and Archiving Policies is a topic many people run from, I think it is always better to get more info on the topic for easier troubleshooting. For more information and description of the Retention Tags and Policies, please refer to TechNet “Understanding Retention Tags and Retention Policies” article. I will summarize…


The curious case of the dot

'How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?' Sherlock Holmes Quote -The Sign of Four Chapter 6: "Sherlock Holmes Gives a Demonstration     I was recently confronted with several cases where customers were complaining that when sending E-Mails with inline attachments,…