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  • Blog Post: Legacy Backup API Failing on HrESEBackupReadFile with HR=0xC7FF1004

    Recently I had the opportunity to dig into an interesting failure with the Exchange Legacy Backup API (ESEBCLI2.DLL).  A backup vendor was seeing a reproducible error when they tried to remotely backup certain Exchange servers from their backup software when running on Windows Server 2008. ...
  • Blog Post: Using Powershell’s new-webserviceproxy with Exchange Web Services

    The other day I was working on a case where the customer was using VBScript and CDO 1.21 to make some changes in some mailboxes, and I couldn’t help but feel that we were working in the past. Don’t get me wrong, there’s a lot of tried and tested VBScript and CDO 1.21 code out there...
  • Blog Post: What are the Supported Ways To Customize Outlook Web Access for Exchange Server 2007 SP1?

    We seem to get a fair amount of questions and cases where the supportability of certain OWA customizations isn’t clear.  In the past, many organizations have found ingenuous ways to modify the OWA files on the server in order to make them behave in different ways.  Unfortunately, changing these...
  • Blog Post: Outlook Web Access Custom Forms for Public Folder Items, ConvertId Fails

    I have seen a few cases now where people are trying to implement custom forms for Public Folder Items under Outlook Web Access (Exchange 2007 Sp1, see here for more details on this functionality). One problem arises when you run into an item that includes “%2B” in the value for the Id that...
  • Blog Post: SMTP Sinks on Exchange Cluster

    In an Exchange cluster environment with multiple active nodes, Exchange instantiates one IIS virtual server (And therefore one SMTP Virtual Server Instance) for each external interface of the cluster. This configuration is duplicated on each node of the cluster. For example, if you have an Active...
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