Understanding Performance Impact of Fast Trickling Option on TMG 2010

Introduction When the EMP feature is enabled, TMG will accumulate data downloaded by the client and scan all the content for malware before transferring it to the client. Accumulating the entire file and scanning it, may take a significant time. During this period of time, the client doesn’t receive any data and as a result…


TMG is Unable to Listen on Port 80 (no IIS was not installed)

Introduction Consider the scenario where a TMG 2010 Server is installed as Hyper-V guest on a Windows 2008 Server. You publish a website on port 80 or enable HTTP to HTTPS redirection on a Web Listener for an existing SSL publishing rule. When you try to access the published website you get an error: 10060…


The Exchange Edge default Receive connector gets unexpectedly disabled even though the Email policy is not configured

Scenario You have installed Forefront TMG 2010, Exchange 2010 Edge role and Forefront Protection for Exchange (FPE) 2010 on the same machine. You do not want to use the Email policy configuration integration feature of Forefront TMG (in this case TMG won’t manage the Exchange Edge and FPE settings), in other words you have not…


The « test rule » button fails with error “Failed to get domain controller name for this published server”

Background: I recently dealt with a support case exhibiting the below issue. My customer was publishing an Exchange CAS server with Forefront TMG, and Kerberos Constrained Delegation (KCD) was used in the publishing rule as the authentication delegation method to the web server. Symptom: The web publishing was working just fine (including KCD) but surprisingly…


How to determine which version of TMG 2010 is installed

Last week Tarek Majdalani, a Microsoft Most Valuable Professional, posted an article about identifying which version of TMG 2010 is installed – RTM, Service Pack 1 or Update 1 to Service Pack 1. The article is available on the TechNet Wiki site here. If you are wondering what version you have installed on your server,…


TMG Reports stop working after installing TMG 2010 SP1

This post is about an issue that might occur after you install Forefront TMG 2010 SP1 and Reports start to show blank result. When this happens, the following Alert appears on TMG console: The daily summaries could not be summarized into a monthly summary for "07/2010". This may cause the report for this period to…