I'm seeking advise/knowledge as how to set/fix the Mail-From value that Exchange submits during smtp authentication with our ISP; as follows:I have a (relatively) new Exchange'07 installation that boots without error and all the services are started; it's healthy. I'm in the process of deploying the installation for use. Our Transport Server is Internet Facing and is to interface with 2 ISP email services whereas each ISP provides us with various email accounts. Our internal mail that is destined for the Internet is being routed through one of the ISP's via an Exchange SmartHost SendConnector.This ISP also hosts our external domain and corresponding mailboxes; e.g. xCompany.com, Glenn@xCompany.com. Let's say our internal domain is named: xcRegion.local. A successful Telnet negotiation with the subject ISP follows:======dialog start===========Microsoft Telnet> open smtp.xCompany.com 2525Connecting To smtp.xCompany.com...220 mail.networksolutionsemail.com ESMTPEHLO xCompany.com250-mail.networksolutionsemail.com250-AUTH LOGIN CRAM-MD5 PLAIN250-AUTH=LOGIN CRAM-MD5 PLAIN250-PIPELINING250 8BITMIMEmail from:Glenn@xCompany.com250 okRcpt to:roniGirl@sbcGlobal.net Notify=success,failure250 okdata354 go aheadSubject: Test from Roni man. This is a Roni test. .250 ok 1243025796 qp 22893======dialog end===========When our Exchange installation executes smtp negotiation with the ISP, the session fails upon the Mail-From submittal and that dialog is a follows:======dialog start===========<,220 mail.networksolutionsemail.com ESMTP,>,EHLO xCompany.com,<,250-mail.networksolutionsemail.com,<,250-AUTH LOGIN CRAM-MD5 PLAIN,<,250-AUTH=LOGIN CRAM-MD5 PLAIN,<,250-PIPELINING,<,250 8BITMIME,>,AUTH LOGIN,<,334 <authentication information>,>,<Binary Data>,<,334 <authentication information>,>,<Binary Data>,<,"235 ok, go ahead (#2.0.0)",*,2,sending message>,MAIL FROM:<Glenn@xcRegion.local>,>,RCPT TO:<roniGirl@sbcGlobal.net>,<,"553 Sorry, relaying denied from that From address (#5.7.1)",<,250 ok,>,QUIT,======dialog end===========U c, the problem is that the Mail-From value as submitted by Exchange doesn't correspond with our domain as hosted by the ISP (the paid for service), rather, the submitted Mail-From value has the DNS-suffix of the local site; e.g. Glenn@xcRegion.local. Specifically, i need Exchange to submit a Mail-From value in the form of <UserNameFrom_xcRegion.local>@xCompany.com (i.e. swap local dnsSuffix for ISP hosted dnsSuffix). -Is this possible? I tried to do this from the Outlook client by making the needed assignment in Outlook's Reply-To field, however, Outlook won't save the setting. I thought this would b a breeze as we all have secondary email addresses that correspond with the ISP hosted domain. But by nature, (come to find out) Outlook reverts back to the User@<localDomain>.local when u close that administration dialog within the Outlook client.I'm thinking this is do-able (just haven't done it yet); advise on this method or other solution would be greatly appreciated!Thanks! Glenn of xSyLent

hi,can you try to create an accepted domain for your xcompany.com in your exchange server. and email address policy for it in your exchange.Accepted Domain creation ;http://technet.microsoft.com/en-us/library/aa996910.aspxE-mail address policy creation ;http://www.msexchange.org/articles_tutorials/exchange-server-2007/management-administration/managing-email-address-policies.htmlregards,Mumin CICEK | Exchange - MVP | www.cozumpark.com | www.mumincicek.com

Thanks for the fast reply Mumin! And, "yes" i will certainly try that; i'll do it now... I glanced at the provisions of the policy creation article u specified and that will take me a bit to digest but i'll get on it now. On a tangent, I was reading about an Accepted Domain for an application as detailed in Managing Exchange Message Routing>Configure Exchange to Route Messages for a Shared Address Space and i assessed that option as inappropriate for me as Internet destinies would then be limited to the respectively configured Shared Address Space and i need to be able to target all Internet destinies. Am i right about this assessment? -It sounds like your prescription is not the same thing and that's y i'm gonna jump on it.I'll get busy on your prescription now ...... and thanks again!Glenn of xSyLent

Mumin,Your prescription nailed it, however, my Protocol Logging got wiped out upon adding the Accepted Domains back in. U c, iadded 2Accepted Domains to represent the 2 aforementioned ISP's. I had these objects created earlier, however, without the corresponding eMail Policies. Back then, i ultimately removed them because i thought that i perhaps mis-interpreted the corresponding TechNet documentation. When i removed them, the Protocol Logs started working (i think that was what enabled the logs). I would certainly appreciate u helping me with this issue; I have it posted at fu r interested:http://social.technet.microsoft.com/Forums/en/exchangesvrtransport/thread/3aeb6c08-a1f3-4bf7-8957-8ad62dc17e3bThanks again Mumin!Glenn of xSyLent