DIGITAL


           MAILbus 400 Message Transfer Agent for Digital UNIX, Version 2.0

           Cover Letter

           AV-QSGKB-TE


           This cover letter provides information about Version 2.0 of the
           MAILbus 400[TM] MTA for Digital[TM] UNIX[R] that you need to know
           before you install the product.

           New Content Types

           This section describes important information about new definitions
           for the Interpersonal Messaging 1992 Content Type. If you use
           the Interpersonal Messaging 1992 Content Type, or if you do not
           specify any Content Type for your users, this will impact you.

           The MAILbus 400 MTA Version 2.0 now provides a mechanism for
           translating between Externally Defined bodyparts and File Transfer
           bodyparts. As a result, the Content Type Interpersonal Messaging
           1992 has been expanded to include File Transfer bodyparts. You can
           now specify:

           o  1992 Externally Defined IPMS

           o  1992 File Transfer IPMS

           o  1992 IPMS Passthrough

           If you have not set a Content Type in your users' Content In-
           formation, or have set the Content Type to Any, your users can
           receive File Transfer bodyparts. If the users' Agent does not sup-
           port File Transfer bodyparts, for example MailWorks[TM] for UNIX,
           ALL-IN-1[TM] or LinkWorks[TM], you must edit the Content Infor-
           mation and add the Content Type 1992 Externally Defined IPMS,
           that is, the object identifier: "{1 3 12 2 1011 5 5 0 1 22}". Us-
           ing this Content Type will make sure that the MTA translates File
           Transfer bodyparts to Externally Defined bodyparts.

           The definition for Content Type Interpersonal Messaging 1992
           has been amended to 1992 Externally Defined IPMS, which means
           that any File Transfer bodypart received will be translated to
           an Externally Defined bodypart. If you want to transfer both
           Externally Defined and File Transfer bodyparts, you will have
           to modify the Content Type in the Content Information for your
           users and specify the object identifier for 1992 IPMS Passthrough,
           "{1 3 12 2 1011 5 5 1 22 0}". You might want to do this for con-
           nections to other MTAs that support the 1992 MHS Standards.

 






           Interworking with Microsoft Exchange

           There is information in the MAILbus 400 MTA Release Notes relating
           to interworking with Microsoft Exchange[R] that you should read if
           your mail system includes Microsoft Exchange, and also ALL-IN-1.



















































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           Copyright Information

           Digital Equipment Corporation makes no representations that the
           use of its products in the manner described in this publication
           will not infringe on existing or future patent rights, nor do the
           descriptions contained in this publication imply the granting of
           licenses to make, use, or sell equipment or software in accordance
           with the description.

           The following are trademarks of Digital Equipment Corporation:
           ALL-IN-1, Digital, LinkWorks, MAILbus 400, MailWorks, VAX, VAX
           DOCUMENT, and the DIGITAL logo.

           Microsoft and Microsoft Exchange are registered trademarks of
           Microsoft Corporation.

           UNIX is a registered trademark in the United States and other
           countries licensed exclusively through X/Open Company Ltd.



































                ©Digital Equipment Corporation. 1996. All rights reserved.


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