Test Connectivity Website and TLS 1.2

An excellent resource for Microsoft Exchange Server and Exchange Online administrators and consultants is the Remote Test Connectivity website at http://exrca.com or https://testconnectivity.microsoft.com/. Here I am going to document an error that indicated that the Exchange Server (in this case) was not working, but we could see that the phone was connecting fine to the… Continue reading Test Connectivity Website and TLS 1.2

SSL Inspection and Office 365

Lots of cloud endpoint URL’s break service flow if you enable SSL Inspection on the network devices between your client and the service. My most recent example of this Enterprise State Routing in Windows 10. Microsoft have a list of URLs for the endpoints to their service, where they are categorised as Default, Allow or… Continue reading SSL Inspection and Office 365

Azure Information Protection and SSL Inspection

I came across this issue the other day, so thought I would add it to my blog. We were trying to get Azure Information Protection operating in a client, and all we could see when checking the download of the templates in File > Info inside an Office application was the following: The sequence of… Continue reading Azure Information Protection and SSL Inspection

SSL and Exchange Server

In October 2014 or thereabouts it became known that the SSL protocol (specifically SSL v3) was broken and decryption of the encrypted data was possible. This blog post sets out the steps to protect your Exchange Server organization regardless of whether you have one server or many, or whether or not you use a load… Continue reading SSL and Exchange Server

Changing ADFS 2.0 Endpoint URL for Office 365

If you are configuring single sign-on for Office 365 then you will need a server running Active Directory Federation Services 2.0 (ADFS 2.0). When you install this you are asked for a URL that acts as an endpoint for the ADFS service, which if you are publishing that endpoint through a firewall such as TMG… Continue reading Changing ADFS 2.0 Endpoint URL for Office 365

Error Code: 500 Internal Server Error. The network logon failed. (1790)

This is an error visible in the web browser when connecting to a HTTPS web site behind an ISA Server. The problem is that the firewall access rule for this web site in ISA Server is forwarding the requests to an internal server on a port that it is not listening on. For example you… Continue reading Error Code: 500 Internal Server Error. The network logon failed. (1790)