Hi there, We are experiencing an issue here with sending a message to an outside recipient. Error message below, the part we're really concerned with is highlighted. Any assistance you guys could provide would be awesome. Delivery has failed to these recipients or distribution lists: PALA problem occurred during the delivery of this message. Microsoft Exchange will not try to redeliver this message for you. Please try resending this message later, or provide the following diagnostic text to your system administrator. _____ Sent by Microsoft Exchange Server 2007 Diagnostic information for administrators: Generating server: ex-01.d1cd.local <Address>#554 5.4.4 SMTPSEND.DNS.MxLoopback; DNS records for this domain are configured in a loop ## Original message headers: Received: from ex-01.d1cd.local ([10.2.1.10]) by ex-01.d1cd.local([10.2.1.10]) with mapi; Wed, 24 Sep 2008 10:12:56 -0400From: BJ Azzarelli <Address>To: PAL <Address>Date: Wed, 24 Sep 2008 10:12:53 -0400Subject: CMS IssueThread-Topic: CMS IssueThread-Index: AckeT6Jtk1chWRy/Rfe5kTU5KLahQg==Message-ID: <402C24948303034CA71A0081E66FA0C908FA167222@ex-01.d1cd.local>Accept-Language: en-USContent-Language: en-USX-MS-Has-Attach: yesX-MS-TNEF-Correlator:acceptlanguage: en-USContent-Type: multipart/related; boundary="_006_402C24948303034CA71A0081E66FA0C908FA167222ex01d1cdlocal_"; type="multipart/alternative"MIME-Version: 1.0

Hi, Please check the dns entries on your DNS server and check is the NS and MX records are OK. Regards, Johan blog: www.johanveldhuis.nl

Yes, please check your DNS settings. A related link for your reference: How to configure DNS to use with Exchange Server http://support.microsoft.com/kb/322856/en-us Thanks, Elvis