Microsoft KB Archive/184995

= XCON: Lotus SoftSwitch X.4 Rejects MAPI Attachments =

Article ID: 184995

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 5.0 Standard Edition
 * Microsoft Exchange Server 5.5 Standard Edition

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This article was previously published under Q184995



SYMPTOMS
When you send a message with an attachment through an X.400 Connector running 1988 mode to a Lotus Soft-Switch (EMS) X.400 system, the message may be rejected By Lotus Soft-Switch.



CAUSE
The Lotus Soft-Switch system rejects the message because the gateway expects a different object identifier (OID) from Microsoft Exchange Server for the MAPI attachment. The expected OID is as follows:

  iso(1) ansi(2) usa(840) microsoft(113556) mapi(3) tags (10) mapi- attachment (2) (ie 2a 86 48 86 f7 13 03 0a 02) (1.2.840.1356.310.3)

The OID supplied by Exchange is as follows:

  (1.2.840.1.1356.310.3) iso(1) ansi(2) usa(840) organization(1) microsoft(113556) mapi(3) tags (10) mapi-attachment (2) (ie 2a 86 48 01 86 f7 13 03 0a 02) P2_registered_identifier

The Soft-Switch system does not expect the organization (1) value, therefore it fails with the MAPI attachment.



WORKAROUND
To work around this problem, use 1984-connection mode rather than 1988 mode. Or you can contact Lotus for a possible fix for the gateway.



MORE INFORMATION
Microsoft Exchange Server sends the correct OID value. The organization (1) must be included so it is valid in the ANSI-defined OID hierarchy.



STATUS
The third-party products discussed here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Additional query words: SOFTSWITCH LOTUS x.400 OID MAPI

Keywords: kbprb KB184995

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