XCON: (040) and (041) in Domain Defined Attribute Addresses Cause Non-Delivery Reports (254725)



The information in this article applies to:

  • Microsoft Exchange Server 5.5 SP3

This article was previously published under Q254725

SYMPTOMS

If you send a message to an X.400 address similar to the following, you may receive a non-delivery report (NDR):
  • C=FR;a=ATLAS;p=INTERNET;DDA:RFC-822=first(u)last@domain.com
  • C=FR;a=ATLAS;p=INTERNET;DDA:RFC-822=first_last(a)domain.com

CAUSE

This issue can occur if the Tracking.log file contains addresses similar to the following:
  • C=FR;a=ATLAS;p=INTERNET;DDA:RFC-822=first(040)u(041)last@domain.com
  • C=FR;a=ATLAS;p=INTERNET;DDA:RFC-822=first(u)last(040)a(041)domain.com
The Exchange Server message transfer agent (MTA) generates NDRs because of the (040) and (041) in the address. The following characters,
  • a
  • b
  • p
  • q
  • u
  • r
  • l
are recognized as printable representations of non-printable character substitutions when inside of parenthesis. For example, the (a) can be used to represent the non-printable character @. The combination of the printable and non-printable character representations creates an address that is difficult to resolve.

RESOLUTION

To resolve this problem, obtain the latest service pack for Exchange Server 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

191014 XGEN: How to Obtain the latest Exchange Server 5.5 Service Pack

WORKAROUND

To work around this issue, manually rewrite the address so that it does not include both printable and non-printable characters.

STATUS

Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5 Service Pack 3. This problem was first corrected in Exchange Server 5.5 Service Pack 4.

MORE INFORMATION

Note that messages sent to addresses similar to the following are handled correctly:
  • C=FR;a=ATLAS;p=INTERNET;DDA:RFC-822=first_last@domain.com
  • C=FR;a=ATLAS;p=INTERNET;DDA:RFC-822=first(u)last(a)domain.com

Modification Type:MajorLast Reviewed:10/2/2003
Keywords:kbbug kbExchange550preSP4fix kbExchange550sp4Fix kbfix kbQFE KB254725