XFOR: Random Inbound Messages Appear with Empty "To" Box or Message Body (299304)


The information in this article applies to:

  • Microsoft Exchange Server 4.0
  • Microsoft Exchange Server 5.0
  • Microsoft Exchange Server 5.5
This article was previously published under Q299304

SYMPTOMS

When Microsoft Exchange version 4.0, 5.0, or 5.5 is installed with Internet Mail Service behind a Cisco Secure PIX Firewall version 4.2(2), inbound messages may randomly appear with an empty To box or an empty message body. In some cases, the message body may appear in the header, or the message body may contain a long string of X characters.

CAUSE

This behavior can occur if the version of Cisco Secure PIX Firewall that you are using is not fully compatible with your Exchange version, Internet Mail Service, or both.

RESOLUTION

To resolve this behavior, upgrade to Cisco Secure PIX Firewall version 4.2(3) or later.

MORE INFORMATION

The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

For information about how to contact Cisco Systems Inc., click the appropriate article number in the following list to view the article in the Microsoft Knowledge Base:

65416 Hardware and Software Third-Party Vendor Contact List, A-K

60781 Hardware and Software Third-Party Vendor Contact List, L-P

60782 Hardware and Software Third-Party Vendor Contact List, Q-Z

Modification Type:MinorLast Reviewed:4/21/2005
Keywords:kb3rdparty kbprb kbui KB299304
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