KB147034 - XCLN: First Line of Inbox Message Body May Be Missing

Article ID: 147034

Article Last Modified on 10/28/2006

Microsoft Exchange Client 5.5
Microsoft Exchange Client 5.0

This article was previously published under Q147034

SYMPTOMS

When you display a message in the Microsoft Exchange Windows 95 client Inbox ReadNote form, the first line of message body may be missing. This can occur on messages received through Innosoft's PMDF SMTP Gateway version 5.04. This same message will be displayed if read with version 3.x of Microsoft Mail for PC Networks MS-DOS or version 3.x of Microsoft Mail for Windows.

CAUSE

The specified number of lines in the message header is incorrect. This results in the first line of the message body being put into the header and thus it is not displayed in the message body.

MORE INFORMATION

When an SMTP message arrives in the gateway, it is converted from SMTP formatting conventions into Extended Microsoft Mail File Format (Extended MMFF). One of the optional extended fields in this format defines the number of lines that are in the header. This field is calculated incorrectly.

Below is a partial example of extended MMFF formatting:

Header field<         EXT:I:3:HEADLEN
Header line count<    9
                      TEXT:340
HeaderLine#1<         FROM:    SMTP:WAMOZART@tinpanalley.com
           2<
           3<         TO:      CSI:MUSIC/BLUEGRASS/JDOUGLAS
           4<
           5<         SUBJECT: This is the Subject Line
           6<
           7<         ----------------------------------------------------
           8<
           9<<<       This is the first line of the Body of Text.
           10         This is the second line of the Body of Text.
           11         This is the third and last line of the Body of Text.

As indicated in the above example, the HEADLEN (header length) field specifies that the header is 9 lines. The ninth line is the first line of the body of the message, therefore, it does not display in the body of the message. The correct line count for the header should be 8 (or even 7).

The MSMail DOS and MSMail Windows 3.x clients ignore this field if it exists. The Microsoft Exchange Windows 95 Inbox, when configured using the Microsoft Mail provider, keys on this field's value to determine the end of the header\beginning of the message body.

For more information about FFAPI and MMFF formats, review 87223, 118785 and the File Format API for Gateways and Applications guide from the Microsoft Mail Software Development Kit.

Keywords: kb3rdparty KB147034