Article ID: 303889 - View products that this article applies to. System TipThis article applies to a different version of Windows than the one you are using. Content in this article may not be relevant to you.Visit the Windows 7 Solution Center This article was previously published under Q303889 This article has been archived. It is offered "as is" and will no longer be updated. SYMPTOMS
When an external DNS resolver is used on your Simple Mail Transfer Protocol (SMTP) virtual server, the next MX record is not tried when the host for the first MX record returns a "4xx" error.
RESOLUTIONWindows 2000 Service Pack 1 and Service Pack 2To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:260910
The English version of this fix should have the following file attributes or later:
(http://support.microsoft.com/kb/260910/EN-US/
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How to Obtain the Latest Windows 2000 Service Pack
Date Time Version Size File name ---------------------------------------------------- 09/13/01 10:52 5.0.2195.4051 320,784 Aqueue.dll 09/13/01 10:52 5.0.2195.4051 66,832 Mailmsg.dll 09/13/01 10:52 5.0.2195.4051 38,160 Ntfsdrv.dll 09/13/01 10:52 5.0.2195.4236 435,472 Smtpsvc.dll Note Before you apply the hotfix that is described in this article, install Windows 2000 Service Pack 2 (SP2) and Exchange 2000 Service Pack 1 (SP1). Windows 2000 Service Pack 4The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.Date Time Version Size File name ---------------------------------------------------------- 08-Nov-2003 01:23 5.0.2195.6872 322,320 Aqueue.dll 08-Nov-2003 01:23 5.0.2195.6824 67,856 Mailmsg.dll 08-Nov-2003 01:23 5.0.2195.6872 38,672 Ntfsdrv.dll 08-Nov-2003 01:23 5.0.2195.6872 444,688 Smtpsvc.dll STATUSMicrosoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. PropertiesArticle ID: 303889 - Last Review: February 27, 2014 - Revision: 4.3 APPLIES TO
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