The Exchange Server Header Firewall
The below Header Firewall video was recorded as “pre-reading” for the Exchange 2010 MCM program. The website that originally hosted this video is no longer available, so I am reposting the video that I...
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Secret NSA Listening Ports in Exchange Server 2013? Of Course Not…
But what do those extra ports in Exchange Server 2013 that are listening actually do. If you bring up a command prompt on an Exchange Server 2013 machine and run netstat –ano | find “:25”. You will get...
View ArticleWhat is X-Forefront-Antispam-Report-Untrusted?
When a message arrives in Exchange Online Protection (EOP) with an existing X-Forefront-Antispam-Report header, it is renamed to X-Forefront-Antispam-Report-Untrusted. If the message is then detected...
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Outlook Archive Appears to be Duplicated
A client sent me the following screenshot today, and though redacted you can see that their Outlook mailbox has more than one Online Archive showing: This users mailbox was not the only one in the...
View ArticleWhitelisting Salesforce Emails in Exchange Online Protection
In this article, Salesforce list three IP address ranges (by way of CIDR notation) where their emails can come from when you are a Salesforce.com user. To ensure these emails come to all users of your...
View ArticleRebuilding Search Catalogs on Exchange Server 2013
In Exchange 2010 there was a PowerShell script for rebuilding the search catalog. This is depreciated in Exchange 2013. TechNet contains instructions on copying the catalog from a working server in the...
View ArticleCannot Send Emails To Office 365 or Exchange Online Protection Using TLS
I have found this is a common issue. You set up an Exchange Online Hybrid or Exchange Online Protection (EOP) stand alone service and follow all the instructions for the creating of the connectors...
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Message Classifications, Exchange 2013, Exchange Online and Outlook
Message Classifications are a way to tag email with a property that describes the purpose of the email, for example “Internal Use Only” might be a classification to tell the recipient of the email that...
View ArticleThe New Rights Management Service
This blog is the start of a series of articles I will write over the next few months on how to ensure that your data is encrypted and secured to only the people you want to access it, and only for the...
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Turning on Azure Active Directory Rights Management
This article is the second in a series of articles about protecting and sharing your content no matter where it is and how you made it. To protect your content so it can be used by those that you allow...
View ArticleManaging Azure Active Directory Rights Management
This article is the third in a series of posts looking at Microsoft’s new Rights Management product set. In the previous post we looked at turning on the feature in Office 365 and in this post we will...
View ArticleConfiguring Trend OfficeScan for Exchange Server
There are lots of articles on configuring Trend OfficeScan on an Exchange Server. They should all be based on the definitive article at...
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Configuring Citrix Netscaler for SharePoint SSL Offloading
I came across an interesting issue today and found that there was not a lot of info on the web about it, so as with lots of things on this blog I thought as it was not really noted about before I would...
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Creating an Azure VPN with a Draytek Router
The Microsoft Azure cloud operating system can be connected to your network by way of a virtual private network or VPN. Azure lists some supported devices and provides configuration scripts for them,...
View ArticleEnabling and Configuring AADRM in Exchange Online
This article is the third in a series of posts looking at Microsoft’s new Rights Management product set. In the previous post we looked at turning on the feature in Office 365 and in this post we will...
View ArticleErrors in Moving Exchange Archive Mailboxes to Office 365
I was trying to move an Archive mailbox to the Office 365 service from my demo environment the other day when I came across an error I thought I would note down here for completion. I could not find...
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Slow Virtualization Networking
I had a complaint from a customer today that there new virtual server with lots of resources was too slow on copying files and could I take a look. So I did! The virtual server was connected to a 1GB...
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Highly Available Office 365 to On-Premises Mail Routing
This article looks at how to configure mail flow from Office 365 (via Exchange Online Protection – EOP) to your On Premises organization to ensure that it is highly available and work in disaster...
View ArticleAn “Inexpensive” Exchange Lab In Azure
This blog post centres around two scripts that can be used to quickly provision an Exchange Server lab in Azure and then to remove it again. The reason why the blog post is titled “inexpensive” is that...
View ArticleExchange DLP Rules in Exchange Management Shell
This one took a while to work out, so noting it down here! If you want to create a transport rule for a DLP policy that has one data classification (i.e. data type to look for such as ‘Credit Card...
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