Address Rewrite Tool

The following is Tip #14 from "25 Exchange 2003 Tips in 25 minutes."

The following is Tip #14 from "25 Exchange 2003 Tips in 25 minutes." This content is excerpted from Scott Schnoll's book, "Microsoft Exchange Server 2003 Distilled," brought to you by © (2004) Pearson Education, Inc. Publishing as Addison-Wesley Professional. Return to the main page for more tips on this topic.


The Address Rewrite tool, EXARCFG.EXE, is a tool you can use to rewrite P2 addresses on messages sent into Exchange from foreign messaging systems that are destined for and external or Internet address. P2 addresses, as defined in RFC 822, include the FROM, REPLY TO, and SENDER fields for a message. EXARCFG.EXE is very similar to the RerouteVia Store registry entry used in Exchange 5.0 and Exchange 5.5 to reroute all SMTP messages through the Exchange information store. It pushes the message into the information store, invalidates all existing MIME information, and forces a conversion of the message from MIME to MAPI. Converting from MIME to MAPI causes the address to be rewritten as configured. Once the rewrite is complete, the message is rerendered and sent off to its destination.

Before using this tool, you should understand its effects on your messages. First, all messages submitted via external SMTP will undergo the content conversion process, even if addresses do not need to be rewritten. Second, unless you route all of your internal messages through external SMTP servers, you cannot use this tool to rewrite internal addresses. EXARCFG.EXE is implemented as a command-line tool; Table 10.2 presents the command-line switches.

For more information on using the Address Rewrite tool, including details on how to also enable it by configuring an attribute in Active Directory, see the Read Me included with this tool.


Get more "25 Exchange 2003 Tips in 25 minutes." Return to the main page.

About the author: Scott Schnoll, an Expert on SearchExchange.com, is an MCT, MCSA and a long-time Microsoft Most Valuable Professional (MVP).

In addition to writing "Microsoft Exchange Server 2003 Distilled," he is a co-author of the upcoming "Exchange 2003 Resource Kit from Microsoft Press" and lead author for "Exchange 2000 Server: The Complete Reference."

Scott has written numerous articles for Exchange & Outlook Magazine, and is a regular speaker at Microsoft conferences, including MEC and TechEd, as well as industry conferences such as Comdex and MCP TechMentor, where he covers topics such as Exchange, clustering, Internet Information Services and security.

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