Hi,I have a client who recently went to Exchange 2007 (from 2003). The internal windows domain name is park.com This domain name is used publically on the internet but not registered by this company. (why are they using this? don't know ...pretty stupid.)Anyway, they also have a proper registered domain name on the internet (lets just say.... Designersales.com) . In general the mail flows fine. Except there are a handful of domains where they can't send e-mail. for example, if they send to yahoo.com, the mail goes to the SPAM folder.I checked if they were black listed and they come up clean... they have a PTR record and SPF records properly registered.I am now suspecting that the problem has to do with the internal windows domain name....as this can be seen in the header MESSAGE-ID (blah blah) @park.com (again, we don't own park.com....but someone on the internet actually does....and I think this is why some spam filters may list the email as spam.)Does anyone have any idea if my hunch is correct? If so, are there any solutions other then renaming the internal windows domain to something else....Thank you...

Hi,Open the EMC and go to the organization configuration and select the hub server. On the hub server select the send connector which is used to send to the internet and get the properties of it. In the field below specify the FQDN this .... specify the correct FQDN and the issue should be solved.Regards,Johanblog: www.johanveldhuis.nl

The correct FQDN is already specified here in the field specify FQDN.... I don't think this area / configuration is causing the issue.The sender from the will get this response when the e-mail fails...., you can still see the internal Windows domain park.com listed. Generatingserver:POSTOFFICE1.Park.com mikegurysh@dvrhs.org mail.dvrhs.org#502Commandunimplemented## Originalmessageheaders: From:Administrator<Administrator@InternetCSI.com> To:"jreyes@rpsd.org"<jreyes@rpsd.org>,"mikegurysh@dvrhs.org" <mikegurysh@dvrhs.org>,"ccarretta@eatontown.org"<ccarretta@eatontown.org>, "Justiniano@epps.org"<Justiniano@epps.org>,"snikas@ridgefieldschools.com" <snikas@ridgefieldschools.com> Date:Tue,23Dec200809:03:31-0500 Subject:Teste-mail.Pleaserespondifyougetthise-mail. Thread-Topic:Teste-mail.Pleaserespondifyougetthise-mail. Thread-Index:AQHJZQc8si4KbcHhr0WBdkpv00rAmA== Message-ID:<E70C012830454047A699F827C81309B81297D4B3@POSTOFFICE1.Park.com> Accept-Language:en-US Content-Language:en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage:en-US Content-Type:multipart/alternative; boundary="_000_E70C012830454047A699F827C81309B81297D4B3POSTOFFICE1Park_" MIME-Version:1.0 When I send to yahoo, I get this header information: FromAdministratorTueDec2305:51:072008 Return-Path:<administrator@internetcsi.com> Authentication-Results:mta103.pa.mail.sp1.yahoo.comfrom=InternetCSI.com;domainkeys=neutral(nosig) Received:from67.133.205.68(EHLOpostoffice1.internetcsi.com)(67.133.205.68) bymta103.pa.mail.sp1.yahoo.comwithSMTP;Tue,23Dec200805:51:21-0800 From:Administrator<Administrator@InternetCSI.com> To:"bob@njcomputernetworks.com"bob@njcomputernetworks.com Date:Tue,23Dec200808:51:07-0500 Subject:testtesttewst Message-ID:<E70C012830454047A699F827C81309B81297D4B1@POSTOFFICE1.Park.com> Content-Language:en-US Content-Type:multipart/alternative; boundary="_000_E70C012830454047A699F827C81309B81297D4B1POSTOFFICE1Park_" MIME-Version:1.0 Content-Length:764