On page 22 of the "Administrator's Guide for the Microsoft Mail Gateway
to MHS" manual for version 3.0, the process to update the gateway to
version 3.0 does not mention changing the Gateway version in the MHS
Directory Manager to Level 70.
This step is required if you run the Gateway on an MHS version 1.2 or
version 1.5 host. The Gateway Version section relates to the Simple
Message Format (SMF) in MHS. An MHS version 1.1 or version 1.2 host
uses SMF 64; an MHS version 1.5 host uses SMF 70.
The Simple Message Format is the specification to which MHS messages
are written. The main difference between SMF 64 and SMF 70 relates to
the number of valid recipients for each message. In SMF 64, each message
can have only one recipient; Microsoft Mail makes a separate copy of the
message for each recipient. In SMF 70, each message can have 64
recipients; the number of recipients in Microsoft Mail is unlimited.
To run the gateway as an SMF 64 gateway, the gateway command line must
include the -G64 option switch.
Because MHS 1.1 does not specify the gateway version, you must specify
the -G64 option switch to run the gateway in SMF 64 mode.
Microsoft Mail Gateway to Novell Message Handling System 3.0