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Exchange Server 2007 and Directory Harvesting Attacks

Over at AllSpammedUp.com I’ve written an article about protecting Exchange Server 2007 from Directory Harvesting Attacks. In many Exchange Server 2007 environments incoming email is received directly by an internet-facing Hub Transport server. By default the transport server will use recipient lookups to notify the connecting host whether an email address is valid or not. […]

December 10, 2008

Well-designed security systems fail gracefully, SonicWALL does not

To quote Bruce Schneier, “well-designed security systems fail gracefully”.  This means for example when the ISA firewall service fails it closes off network connectivity entirely (ie retains security) instead of opening your entire network up (ie decreases security). This week SonicWALL’s license servers suffered a glitch rendering thousands of customer units useless and leaving the […]

December 6, 2008

Which Exchange certification should you pursue?

I often get asked which is the better Exchange certification to pursue for someone who wants to work as an Exchange administrator or consultant.  The natural inclination is to the latest version, and in many cases this would be fine because learning the latest version of a Microsoft product teachs you many things about previous […]

December 5, 2008

Event ID 9554 and Backup Exec 11d backup failures for Exchange Server 2007 Mailbox Servers

You may encounter an issue with Backup Exec 11d performing backups of Exchange Server 2007 Mailbox Servers using Granular Restore Technology (GRT) when the backup job is targeted at tape media. The backup job fails with the following error: Backup- \SERVER.domain.localMicrosoft Information StoreFirst Storage Group V-79-57344-33928 – Access Denied. Cannot backup directory Mailbox Database and […]

December 2, 2008

Inside look at the Microsoft Certified Master program for Exchange Server 2007

The Microsoft Exchange Team Blog has a great write up by Greg Taylor who is the program manager for the MCM: Exchange Server 2007 program. The Microsoft Certified Master program is the premium credential for IT professionals and consultants working with Microsoft products such as Windows Server 2008, Exchange Server 2007, SQL Server 2008, SharePoint […]

November 27, 2008

The many faces of SharePoint

Did you know that SharePoint is behind several of Microsoft’s online services?  If you didn’t then check out this post at the Microsoft Office SharePoint Blog. Link: The many faces of SharePoint

November 27, 2008

Enterprise Systems Backup and Recovery (Book)

Dan lets us know that the book Enterprise Systems Backup and Recovery: A Corporate Insurance Policy written by local guru Preston De Guise is available now.  The book is a platform-agnostic guide to comprehensive backup and recovery systems and should be compulsory reading for IT decision makers. In the author’s own words:   Instead of […]

November 25, 2008

Exchange Server 2007 SP1 Update Rollup 5 released

The Microsoft Exchange Team has announced the release of Update Rollup 5 for Exchange Server 2007 SP1.  The update is available now at the Download Center and will make its way to Microsoft Update in the next 2-3 weeks. The support article describing the hot fixes included in the rollup can be found here, and […]

November 24, 2008

Next version of Exchange Server in 2010?

Paul Thurrott has posted a screenshot of the Microsoft Download Center in which the next version of Exchange may have been inadvertently revealed.  The image shows “Microsoft Exchange Server 2010” in the product list. If this is accurate then we might expect to see the next version of Exchange released late next year (Exchange Server […]

November 22, 2008

Unable to enable Offline Address Book for web distribution

You may encounter an issue with Exchange Server 2007 organisations that have been migrated from previous Exchange versions where the Default Offline Address List cannot be enabled for web distribution, even after the OAB has been moved to an Exchange Server 2007 server. In the Exchange Management Console the check box to enable web distribution […]

November 20, 2008

Exchange Server 2007 CCR recommendations

From Tales of a System Administrator come these recommendations for Exchange 2007 CCR deployments:   Having had Cluster Continuous Replication in place now for about a year, I’ve derived some of my own best practice recommendations that might not be found within the official Microsoft documentation. Although these recommendations are based on a very solid […]

November 18, 2008

SharePoint Security Resources

Microsoft provides two useful resources for MOSS security: Security for Office SharePoint Server 2007 (downloadable book) Office SharePoint Server Security Account Requirements (worksheet) Link: John Westworth’s blog on Technet

November 17, 2008