XCON: Read Receipt May Not Be Returned From ISOCOR MTA

ID: Q170054

The information in this article applies to:

Microsoft Exchange Server, versions 4.0, 5.0, 5.5

SYMPTOMS

When a Microsoft Exchange user sends a message with a read receipt request to an ISOCOR message transfer agent (MTA) user, the ISOCOR MTA may not send back a read notification report.

CAUSE

This behavior can occur when the Microsoft Exchange user sends the message to an ISOCOR user with the following X.400 address:


   C=us;A-md;P=prmd;O=organization;S=surname;CN=common-name

When the CN address field is used over a 1984 mode X.400 connection, it is moved to the Domain Defined Attribute (DDA) field during the downgrade process. If the message also contains a delivery receipt request, the ISOCOR MTA sends that, but does not send back a read notification report. This has been found to be a limitation in the ISOCOR ISOPLEX 800 v.1.15. This behavior is by product design.

Additional query words:

Keywords : XCON
Version : winnt:4.0,5.0,5.5
Platform : winnt
Issue type : kbbug