HI , i have a scenario concern. I have a 3 forests.Examples ABC.com,XYZ.com, ASD.com.I need to deploy exchange 2007 messaging solustion for that all three forests.What is the best scenario for me ? Regards

Hi!I have few follow-up question prior to giving my opinion on the best scenario:1.Is the3 forest locatedin 1 company?2. Is the 3 forest are running in Windows 2003or 2000?3. Is the 3 foresthas Multi-subdomain set-up?4. How many users in each users?5. Does this 3 forest has Exchange Organization or any existing mail system?Regards,LRMCP

I have few follow-up question prior to giving my opinion on the best scenario: 1.Is the3 forest locatedin 1 company? Yes for One compeny 2. Is the 3 forest are running in Windows 2003or 2000? WIndows 2003 3. Is the 3 foresthas Multi-subdomain set-up?yes there are Subdomains 4. How many users in each users? 1000 per forests 5. Does this 3 forest has Exchange Organization or any existing mail system?Domino(This is not effect to Exchange) Regards

hi,so you can use Exchange for your messaging system.1) install exchange on your server.2)you can use LCR,CCR,SCR for HA...3) after installing Exchange successfully you can create Accepted domains for your three domains. send - receive connectors etc...4) and create email address policies for your accepted domains.5) forward your mx records to your real ip address of company.6) anymore you can create your users etc in your exchange environment.when you installling exchange server you candeploy exchange server roles to seperate servers for performance, for high availability etc...and here there are good articles about your issue;http://www.msexchange.org/articles_tutorials/exchange-server-2007/migration-deployment/shared-hosting-exchange-2007-part1.htmland managing Hub Transport Server ;http://technet.microsoft.com/en-us/library/bb124024.aspxregards,Mumin CICEK | Exchange - MVP | www.cozumpark.com | www.mumincicek.com

HI Thanks for the info. Ple let me know how to config external DNS for exchange 2007 ? and how to config for intenet email routing ? Regards

hi,your ISP can do it for you. mx records for your email domain can be forwarded to your real ip address.regards,Mumin CICEK | Exchange - MVP | www.cozumpark.com | www.mumincicek.com

ISP ask ip address and Ports and i need to NAT real ip to internal server .WHich Port should i nat ? Which ports i will give them ? Regards

hi,25 for smtp, 110 for pop3, 995 for pop3/ssl, 443 for ssl communication...you must forward these ports to your internal exchange serverregards,Mumin CICEK | Exchange - MVP | www.cozumpark.com | www.mumincicek.com

Hi GayanWIc!Just to add up on Mumin, you have to consider the following before you install Exchange 2007 in any of your Forest: 1. Preparing Active Directory for Exchange 2007 (Amust read in order to avoid installation problem that is related to AD) http://technet.microsoft.com/en-us/library/bb288907.aspx2. Since you have existing mail system that is running on Lotus Domino, should there have a requirements on Lotus-Exchange 2007 Co-existence or Migration please refer to the following URL:Lotus Domino to Exchange 2007 (Migration Guideline)http://www.msexchange.org/articles_tutorials/exchange-server-2007/migration-deployment/migrating-domino-exchange-2007-part1.htmlSharing an SMTP Namespace/Domainhttp://www.msexchange.org/articles_tutorials/exchange-server-2007/planning-architecture/exchange-2007-smtp-namespace-sharing-different-relay-domain-types.htmlMicrosoft Transporter Suite for Lotushttp://www.microsoft.com/downloads/details.aspx?FamilyID=72A947D9-E75F-4EAE-B153-E0B4A16442D9&displaylang=enRegards,LRMCP