--------| Exchange & Outlook UPDATE |--------

IN THIS ISSUE
*Commentary: Certificates and Exchange, Part 2
*Special: UK Exchange and Mobility User Group Launches
*Exchanging Ideas: Exchange Recovery Tools
*New and Improved: RoadSync Supports Exchange Server 2003 SP2 Mobility Features

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***COMMENTARY: Certificates and Exchange, Part 2
by Paul Robichaux, Exchange Editor, exadmin@windowsitpro.com

Last week, I wrote about Secure Sockets Layer (SSL) certificates and how Exchange uses them ("Certificates and Exchange, Part 1," September 7, 2006, http://www.windowsitpro.com, InstantDoc ID 93440). This week, I delve into more detail about how Exchange Server 2007 uses certificates. Exchange 2007's features are significantly different from Exchange Server 2003, and understanding how the new features work is important to your deployment planning. (One minor correction to last week's column: Alert reader JP Donnio pointed out that I was comparing two different types of certificates. To be fair, I should compare Comodo's $139 certificate to GoDaddy.com's $90 high-assurance certificate, not the $20 low-assurance version.)

When you install Exchange 2007, the product automatically generates a brand-new certificate intended for use only with Exchange. This certificate is a full 128-bit SSL-capable certificate, but it's self-signed, so it won't be on the trust list of your browser, your mobile device, or computers joined to your domain, and you'll get a certificate-trust warning when you try to use the certificate with Microsoft Outlook Web Access (OWA).

The installed certificate will automatically be assigned for use with HTTP, SMTP, IMAP, and POP. This instant assignment is handy because it means communications that use those protocols are protected from the time you complete the installation. For example, Exchange will respond to SMTP Transport Layer Security (TLS) requests by using both the Internet-standard STARTTLS verb and the Exchange 2007–specific X-ANONYMOUSTLS extension. Likewise, OWA is immediately protected because the self-signed certificate for the Client Access server role is assigned to the Exchange virtual directory at installation time.

You can manipulate Exchange 2007 certificates in several ways. First, the Microsoft PowerShell cmdlet Get-ExchangeCertificate lets you see the certificate properties, including which roles or protocols the certificate is assigned to. By default, when you run Get-ExchangeCertificate on a newly installed server, you'll see a single certificate with its services field set to "all." You'll also see that the certificate is assigned to several Microsoft IIS virtual directories, including OWA and Exchange ActiveSync.

Having so much automatic protection is a good starting point, but what if you want to introduce other certificates? The answer is "it depends." For services offered through IIS, you'll need to use the standard Internet Services Manager (ISM) interface to request and manage certificates. Fortunately, ISM makes moving your existing certificates to a new Exchange 2007 Client Access server easy, provided that you have an exportable private key in the certificate. (If not, your Certificate Authority—CA—might let you rekey the certificate, but policies vary, so don't count on this capability.)

If you want separate certificates for other Exchange services, such as Autodiscover, you'll need to become acquainted with two additional cmdlets: New-ExchangeCertificate and Import-ExchangeCertificate. The former lets you generate new self-signed certificates or certificate requests (which you can then send on to your preferred CA). Once you get the certificate back from the CA, you'll use Import-ExchangeCertificate (which expects a Public-Key Cryptography Standards #12 file as input) to link the CA-issued certificate with the Exchange services you want to use.

You need to keep some subtleties in mind as you plan your certificate deployment. For one thing, remember that you might have multiple services on a single Client Access server. Microsoft currently recommends adding an extra subject name to the certificate so that the certificate is issued to, say, autodiscover.robichaux.net and mail.robichaux.net, but not every third-party CA allows this additional name. Second, bear in mind that it's perfectly OK to use self-signed certificates for your internal operations, but you might want to use externally issued certificates for public-facing services such as TLS-protected SMTP, OWA, and Exchange ActiveSync. In particular, some Windows Mobile 5.0 devices can't be easily loaded with new certificate roots, and that limitation might influence your choice of CA.

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***SPECIAL: UK Exchange and Mobility User Group Launches
by Anne Grubb, agrubb@windowsitpro.com

IT pros in the UK who have an interest in Exchange and Windows Mobile devices have a new focal point for their community. The Microsoft Messaging & Mobility User Group UK, started in July by Nathan Winters, a senior technical consultant for b2Lateral in London, with help from Eileen Brown of Microsoft UK, is the UK's first Exchange-related user group. "I attended the first \[Mark\] Minasi Forum meeting in May, which inspired me to try and set up something community-based in the UK," said Winters.

Winters' vision for the user group is to serve as a gathering point for Exchange enthusiasts of all levels of experience and "provide a link between Microsoft and Exchange users to improve the product and the skills of those using Exchange," he said. The group's Web site at http://www.mmmug.co.uk will play a key role in driving the user group and, Winters said, "becoming a key resource for Exchange pros with high-quality articles and well supported forums." The group will also have regular meetings with speakers from within and outside Microsoft and also is planning an Exchange Server 2007 launch event with Microsoft and Culminis, a user group for IT professionals interested in Microsoft products.

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***EXCHANGING IDEAS

Focus: Exchange Recovery Tools

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You don't need a time machine to restore valuable data after a hardware failure or data corruption. These 12 recovery tools can help you recover your Exchange data.
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Have a question? Got answers? Join your peers in the Exchange discussion forums:
http://forums.windowsitpro.com/web/forum/categories.aspx?catid=40&entercat=y
Current Threads:
Using Certificates to Digitally sign emails
Two Forests, One Exchange Server in the other Forest
Really old free busy data needed

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Don't forget to sound off in our Instant Poll. This month's question is "In a typical work week, how much time do you spend managing SharePoint?"
http://www.windowsitpro.com/MicrosoftExchangeOutlook/Index.cfm

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***NEW AND IMPROVED
by Blake Eno, products@windowsitpro.com

RoadSync Supports Exchange Server 2003 SP2 Mobility Features
DataViz announced that its Exchange ActiveSync client, RoadSync, is now available for mobile devices with Windows Mobile 2003 Second Edition software. RoadSync wirelessly synchs email, attachments, calendar, and contacts, but this edition supports new mobility features added in Microsoft Exchange Server 2003 Service Pack 2 (SP2). These features include Direct Push technology, Remote Wipe, Global Address List Lookup, and IT Policy Enforcement. DataViz will also offer RoadSync for Windows Mobile 5.0, which will support new Exchange 2007 productivity features such as email flagging, online mailbox search, and support for linked SharePoint files. For more information, contact DataViz at 203-874-0085.
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***EVENTS AND RESOURCES
These Windows-related events, papers, and resources will help you keep your knowledge and skills up to date and help you deploy, secure, and maintain the latest Exchange- and Windows-related technologies. For more Exchange related resources, visit
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