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Q146562: XFOR: Some Connection Parameters Not Configurable Per Domain

Article: Q146562
Product(s): Microsoft Exchange
Version(s): winnt:4.0
Operating System(s): 
Keyword(s): kbusage
Last Modified: 16-MAR-1999

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The information in this article applies to:

- Microsoft Exchange Server, version 4.0 
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SUMMARY
=======

You can specify some Microsoft Exchange Internet Mail Connector (IMC) options on
a per e-mail domain basis using the Microsoft Exchange Administrator program.
These include message delivery and message content. However, the following
connection parameters cannot be specified on a per e- mail domain basis:

  Max no. of Inbound Connections
  Max no. of Outbound Connections
  Max no. of Connections to a single host
  Max no. of Messages sent in a connection

These four values can be configured in the IMC properties page using the Advanced
button on the Connections tab.

MORE INFORMATION
================

The ability to set these four values on a per e-mail domain basis is very
important to some people who want interoperability with single-threaded SMTP
gateways like the Microsoft Mail 3.x SMTP gateway.

However, the only current solution, to send SMTP mail directly to a Mail 3.x
gateway, would hinder overall performance. This gateway runs on MS-DOS and can
only support one connection at a time. This will cause a problem when an outside
host tries to make multiple connections to the MS-DOS computer because it could
result in:

- Many retries initiated as the IMC tries to open multiple threads to a
  single-threaded SMTP gateway.

- Lock-ups of single-threaded SMTP gateways.

- Loss of overall IMC performance because the "maximum number of connections to
  a single host" must be set to 1.

Additional query words:

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Keywords          : kbusage 
Technology        : kbExchangeSearch kbExchange400 kbZNotKeyword2
Version           : winnt:4.0

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