Q. Why do I receive errors when I use Exchange Server 2003's Microsoft Outlook Web Access (OWA) to access a front-end server--but not when I use it to directly access the back-end server?

A. If you receive errors when you use Exchange 2003 OWA's spell-checking facilities to access a front-end server, but not when you access a back-end server, the security settings on the front-end server's Microsoft IIS virtual directory might be incorrect. To check the security settings and, if necessary, correct them, perform the following steps:

  1. Log on to the back-end server and start the Internet Information Services (IIS) Manager (click Start, Programs, Administrative Tools, Internet Information Services (IIS) Manager).
  2. Navigate to &ltserver&gt, Web Sites, Default Web Site, ExchWeb.
  3. Right-click bin and select Properties.
  4. Click the Directory Security tab.
  5. Click the Edit button in the "Authentication and access control" section.
  6. Make a note of the current Authentication Methods. Click OK.
  7. Select bin, right-click spell (which is a child directory of bin), and select Properties. Repeat steps 4 through 6.
  8. Log on to the front-end server and repeat steps 1 through 7, this time ensuring that the Authentication Methods match those of the back-end server. (The problem usually occurs because the "Integrated windows" security check box in the Authentication Methods section isn't selected on the front-end server.)
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