This article has been archived. It is offered "as is" and will no longer be updated.
Source: Microsoft Support
RAPID PUBLISHING ARTICLES PROVIDE INFORMATION IN RESPONSE TO EMERGING OR UNIQUE TOPICS, AND MAY BE UPDATED AS NEW INFORMATION BECOMES AVAILABLE.
When Entourage 2004 user tires to Synchronize email not all of the items get synchronized.
Inbox does not contain the same number of items in Entourage as there are present in Outlook or OWA.
Item count is different between Outlook 2003 or OWA and Entourage 2004.
Zantaz Mail archival system is present in the environment. Zantaz impliments a ISAPI filter On the Exchange virtual directory in IIS, called EASOWA this ISAPI filter intercepts the Entourage client requests and does not allow all messages to be Synchronized.
Zantaz mail archival system is present on the back end mail server. This prevents all mail messages from being downloaded and synchronized to the Entourage 2004 Database when using Webdav.
To correct the issue update to the latest version of EASOWA Version 4.2 addresses the issue.
Work around (1)
If they do not mind disabling the Zantaz email archival system then can remove the EASOWA isapi filter from the Website that is hosting Exchange owa.
Work around (2)
Some versions of EASOWA can be modified to only effect Supported clients. Since Entourage is not a Supported client by the Zantaz application it can be configured to ignore Entourage.
Here are the instructions for excluding Entourage browsers:
Requirements: easowa.dll 188.8.131.52/184.108.40.206 or later easfetch.dll 220.127.116.11 or later If you need a later version, please let me know.
Replace the browscap.ini file that is found in the EASOWA\OWA Root folder with the one attached. We have added the following entry to specify which browsers we currently support. i.e. easowa=True
Next, add the following entry to the EAS.INI file on the OWA server, under the [OWA] section:
Entourage is not supported and so will be ignored by the ISAPI filter.
Best method is to update to the latest version 4.2 of Zantaz and no modifications are necessary.
MICROSOFT AND/OR ITS RESPECTIVE SUPPLIERS MAKE NO REPRESENTATIONS ABOUT THE SUITABILITY OF THE INFORMATION CONTAINED IN THE DOCUMENTS AND RELATED GRAPHICS PUBLISHED ON THIS WEBSITE FOR ANY PURPOSE. THE DOCUMENTS AND RELATED GRAPHICS PUBLISHED ON THIS WEBSITE COULD INCLUDE TECHNICAL INACCURACIES OR TYPOGRAPHICAL ERRORS. CHANGES ARE PERIODICALLY ADDED TO THE INFORMATION HEREIN. MICROSOFT AND/OR ITS RESPECTIVE SUPPLIERS MAY MAKE IMPROVEMENTS AND/OR CHANGES IN THE PRODUCT(S) AND/OR THE PROGRAM(S) DESCRIBED HEREIN AT ANY TIME.