Hi, This was how I was going to look at deploying our Exchange 2010/TMG with edge server rollout, and was how I believed the system was tested. The Edge sync functions ignore the domain membership. More of a pressing question for me was the mixing of 2010 edge servers with 2007 hub transfer servers, something I am getting mixed messages on. Andrew. From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Jerry Young Sent: 20 January 2010 17:30 To: isalist@xxxxxxxxxxxxx Subject: [isalist] Exchange Server 2010 Edge and TMG 2010 Integration I wanted to bounce a question off of the list regarding usage scenarios for integrating TMG 2010 with an Exchange 2010 Edge Server. My goal is to also install Forefront for Exchange on the boxes, too. My question, however, comes down to thoughts on domain membership and TMG utilization. My current thought is to make the Exchange 2010 Edge Servers domain members, install TMG on both of them in an array, and then use that same TMG array to provide reverse proxy access to other resources (like OWA, OMA, OA, CWA, etc.) through publishing rules. As in the past, the Exchange Product Group doesn't want the Edge Servers to be members of the forest in which the Exchange organization is hosted. I ran across postings on the Internet that indicate this can be done but was wondering what the list has seen deployed so far to date. While I could certainly dump the Edge Servers into their own perimeter network, that would require additional complexity, planning, and configuration for my client that they would like to avoid; they accept the risks presented by having the Edge Servers be domain members with the condition that TMG is used to mitigate those risks. Thoughts? -- Cordially yours, Jerry G. Young II Microsoft Certified Systems Engineer Young Consulting & Staffing Services Company - Owner www.youngcss.com<http://www.youngcss.com> -- allpay achieved PCI DSS and ISO 27001 certification in 2008 Registered in England No. 02933191. UK VAT Reg. No. 666 9148 88. Telephone: 0844 225 5729, Fax: 0844 557 8350. Website: www.allpay.net Email: enquiries@xxxxxxxxxx This email, and any files transmitted with it, is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the allpay Information Security Manager at the number above.