Ref: 99970406
Title: Rel Note - 3+Mail for Macintosh - Part No. 7728-00
Date: 1/7/90

Copyright 3Com Corporation, 1991.  All rights reserved.

3Com Corporation, 1990 3+Mail for Macintosh
All rights reserved. Part No. 7728-00
1 July 1990

3+Mail for Macintosh

Release Notes
=============
These release notes provide information for network administrators setting
up 3+Mail for Macintosh with 3+Open for Macintosh.

There are three main things you need to know:

* The network server software for 3+Mail for Macintosh which processes the
mail and keeps a list of all the names on the network is unchanged.

* Using 3+Mail on a 3+ or 3+Open network has basically not changed.  Some
Macintosh workstation users may need to take specific actions to maximize
3+Mail performance.

* Where you install the mail gateway the 3+Open Mail LocalTalk Support
component in 3+Open for Macintosh may affect ease of use for Macintosh
workstation users.

The first section of these release notes provides some background on how
3+Mail works.  The second section contains information that network
administrators must give to Macintosh workstation users.

XNS Based Mail
================
When a Macintosh workstation communicates with a mail server, the
workstation does not receive any information about whether the mail server
is running 3+ or 3+Open network software.  The Xerox Network Systems (XNS)
protocol is used to communicate between the 3+Mail software on the
Macintosh workstation and the mail server.  Therefore, to run 3+Mail for
Macintosh, a user needs to install 3+Mail for Macintosh and an XNS driver
provided within one of two files: 3+Mail CP or 3+File.

AppleTalk  protocols are used to transport the XNS packets from a Macintosh
workstation on a LocalTalk network to 3+ and 3+Open servers.  The server
software then removes the AppleTalk information and passes the XNS packets
to their destination (Name and Mail services on one or more servers) on an
Ethernet or token ring network.  This procedure works in reverse for XNS
packets going to a Macintosh workstation on a LocalTalk network.  On a 3+
network, a 3+NetConnect server passes the XNS packets back and forth.  On a
3+Open for Macintosh network, the 3+Open Mail LocalTalk Support component
uses the internal routing feature (IRF) of 3+Open's XNS protocol stack to
pass XNS packets back and forth.

In contrast, a Macintosh workstation on an Ethernet network sends XNS
packets directly to the Name and Mail services on the local network.

Server Installation Alternatives
================================
The communication processes described above provide alternatives for
installing the 3+Open Mail LocalTalk Support component:

* If you have Macintosh workstation users on a LocalTalk network who need
to access 3+Mail, you must provide either:

* A 3+NetConnect server  connected to the LocalTalk network
or
* A server running the 3+Open Mail LocalTalk Support component where
AppleTalk protocols are used to transport the XNS packets from the
Macintosh workstation

* If you do not have any Macintosh workstation users on a LocalTalk network
who need to access 3+Mail, you do not need to install the 3+Open Mail
LocalTalk Support component.

* You can install the 3+Open Mail LocalTalk Support component on any 3+Open
server on the network that also has the AppleTalk and XNS stacks installed
on it.

 You do not need to install the support component on the server that has
the LocalTalk segment connected to it (as 3+NetConnect required).  You also
do not need to install the support component on the Mail or Name server.
This means that you can use another AppleTalk Phase 1 router, such as the
3+Open for Macintosh Phase 1 router, or a third party product, such as a
Shiva FastPath to connect LocalTalk to Ethernet.

User Installation Alternatives
==============================
Where you install the 3+Open Mail LocalTalk Support component affects what
a Macintosh workstation user sees in the Chooser.  For a detailed
explanation of the alternatives, see "Working with Multiple 3+Open Mail
LocalTalk Support Installations" in the 3+Open for Macintosh Release Notes.

Additional User Information
===========================
Using 3+Mail CP or 3+ File
--------------------------
All Macintosh workstation users who will be using 3+Mail need to install
one of two files that contain the XNS driver: 3+Mail CP or 3+File.

3+Mail for Macintosh uses the 3+Mail CP file to access the 3+ and 3+Open
Name service over Ethernet.  It provides the Chooser interface that lets
3+Open users log into the Name service without the network window that
comes with 3+File.  The 3+Mail CP file is for users who are:

* Using an AppleTalk Phase 2 network with an EtherTalk 2.0 driver.

* Using a 24-bit monitor with 32-bit QuickDraw.

* Only using 3+Mail and have no need to access 3+Share servers.

The 3+File file is for users who need to access both 3+Share servers (for
file access) and 3+Open servers.

Upgrading Current 3+Mail for Macintosh Users
--------------------------------------------
In order for Macintosh workstation users on a 3+Open for Macintosh network
to access 3+Mail, they must upgrade the 3+Mail CP file to version 1.6
located on the 3+Mail User for Macintosh diskette.  In addition, they must
remove any previous versions of 3+File or 3+Mail CP files if they are using
an AppleTalk Phase 2 network with an EtherTalk 2.0 driver, or if they are
using a 24-bit monitor with 32-bit QuickDraw.

Users should install the file in the System Folder of their startup
diskette.  For installation instructions, see Appendix D, Getting Started
on a 3+Open Network, in the 3+Mail for Macintosh User Guide.

Other User Installation Requirements
------------------------------------
Users cannot reliably use a mailbox on a 3+ server.  Problems may occur
when they receive large attachments.  Make sure that all 3+Open for
Macintosh workstation users using 3+Mail for Macintosh on a LocalTalk
network, where mail communication pasases through the 3+Open Mail LocalTalk
Support component, do the following things:

* Place mailboxes on a 3+Open for Macintosh server or on a local hard disk,
not on a 3+ server.

* Remove mailboxes that will be accessed from a 3+ server.

Macintosh users with 3+Mail for Macintosh may need to use the Chooser to
select a zone containing a server on which the 3+Open Mail LocalTalk
support component is installed in order to use the Name service with 3+Open
Mail.  This depends on network organization and whether multiple zones are
present.  For details, see "Working with Multiple 3+Open Mail LocalTalk
Support Installations" in the 3+Open for Macintosh Release Notes.

Moving Mailboxes from 3+ to 3+Open Servers
==========================================
3+Mail for Macintosh uses Volume relative pathnames to find both mailboxes
and messages.  Users can easily move (drag) mailboxes from one server to
another on the desktop.  However, users must explicitly find an old default
mailbox or name a new one using 3+Mail for Macintosh when they move
mailboxes from one server or volume to another.

To move mailboxes from a 3+ to a 3+Open server:

1. Log into both the 3+ server where the mailboxes currently reside, and
into the 3+Open servers where you want to locate new mailboxes.

2. Connect to any network volumes.

3. Drag all mail folders (mailboxes) to the 3+Open server or a local hard
disk.

4. Start up 3+Mail for Macintosh from the 3+Open server.

5. If you see the message "Default mailbox no longer exists," select  the
"Open an existing mailbox as the default" option.

 The Select mailbox to open dialog box is displayed.

 If the volumes on both servers happen to have the same names, 3+Mail for
Macintosh automatically finds the default mailbox for you.


6. Select a mailbox from the list, or select the Find button.

 Locate mailbox folders in the same way that you navigate the Masintosh
file system to find any volume, file, or folder within an application.
Once you find and select the old default mailbox (the one that you copied
to the 3+Open server in step 2, above), the program makes it the new
default  mailbox on that server.

7. Delete all the old mailboxes from the 3+ server by dragging the
mailboxes to the trash can.

 After you are satisfied that the mailboxes were moved successfully, empty
the trash.

Trademarks
==========
3Com, 3+Share, and 3+Mail are registered trademarks of 3Com Corporation.
3+Open and 3+NetConnect are trademarks of 3Com Corporation.

AppleTalk and Macintosh are registered trademarks of Apple Computer, Inc.
EtherTalk, LocalTalk, and QuickDraw are trademarks of Apple Computer, Inc.
XNS is a trademark of Xerox Corporation.  FastPath is a trademark of
Kinetics, Inc.
