I have installed exchange 2007 in a single server with two Accepted Domian, for example:domainA.com ; domainB.com The Active Directory Domain name is domainA.com and the exchange server name is: mail.domainA.comIs it possible to hide the server name of mail.domainA.com in the Internet headers when sending message out with a account with email address of EMAIL GONE?Thank you!

Hi,This would help you to work on this issue:http://exchangeshare.wordpress.com/2008/05/26/how-to-remove-header-from-outgoing-mails-in-exchange-2007/Additionally, please refer to the below article to understand that Header Firewall which is very helpful for you:http://technet.microsoft.com/en-us/library/bb232136.aspxThanksAllen

Hello Allen,Thank you very much for the info. The Internet headers can hide the internal server name now.I'd like to get more help from you for the following two questions:1. Is it possible to hide or modify the Send Connectors' FQDN which responses to HELO or EHLO command in the Internet headers? For example, to hide or modify the infomation like: " Received: from unknown (HELO mail.domainA.com) ([xxx.xxx.xxx.xxx])"2. Is it possibe to hide, or remove, or modify the Generation server: mail.domainA.com from the Undeliverable notofication? For example "Sent by Microsoft Exchange Server 2007 Diagnostic information for administrators: Generating server: mail.domainA.com "The above questions are raised because the Accepted Domian of domainB.com doesn't want others know their Email system is hosted together with the domainA.com.Is there any good way to separate the two domains, to make Internet headers and Generating server to include their domain informaion only?Best reagrds!Liu Lin