DOCUMENT:Q217217 21-DEC-2000 [exchange] TITLE :XFOR: How to Control Routing of Subdomains in IMS Routing PRODUCT :Microsoft Exchange PROD/VER::5.0,5.5 OPER/SYS: KEYWORDS:exc5 exc55 ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, versions 5.0, 5.5 ------------------------------------------------------------------------------- SUMMARY ======= In the properties for the Internet Mail Service, there is an option to enable routing. For the Internet Mail Service to still properly receive mail for the local domain, that domain must be entered and marked as . The result is that all subdomains of the higher-level domain are also accepted as inbound. Although you can specify that some subdomains be handled differently, this approach can become problematic in the case of a large number of subdomains. MORE INFORMATION ================ Assume a domain of sample.microsoft.com with subdomains of dallas.sample.microsoft.com, seattle.sample.microsoft.com, and chicago.sample.microsoft.com. In this organization, mail for chicago.sample.microsoft.com is handled by a separate host. In the Internet Mail Service, the following entries are present: sample.microsoft.com chicago.sample.microsoft.com This Internet Mail Service server accepts sample.microsoft.com and all its subdomains as inbound, redirecting mail for chicago.sample.microsoft.com to the other host. This scheme works well if there are few subdomains to be rerouted in this manner, but becomes unwieldy if there are many subdomains to be rerouted. In this instance, prepending "#" creates an explicit route that ignores subdomains. For sample.microsoft.com, the table looks like: #sample.microsoft.com dallas.sample.microsoft.com chicago.sample.microsoft.com For this example, only two subdomains are accepted as inbound on this server: sample.microsoft.com and dallas.sample.microsoft.com. The chicago.sample.microsoft.com is rerouted to the other host, and seattle.sample.microsoft.com (and any other unlisted domain) is rerouted by whatever method is specified on the Connections tab for the Internet Mail Service. NOTE: Subdomains of dallas.sample.microsoft.com (such as plano.dallas.sample.microsoft.com) are also accepted inbound implicitly; prepending with the "#" sign also forces this entry to be explicit if you want. The example companies, organizations, products, people and events depicted herein are fictitious. No association with any real company, organization, product, person or event is intended or should be inferred. Additional query words: IMS ====================================================================== Keywords : exc5 exc55 Technology : kbExchangeSearch kbExchange500 kbExchange550 kbZNotKeyword2 Version : :5.0,5.5 Issue type : kbinfo ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.