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Q175953: XADM: Disabling Proxy Address Generation Does Not Work

Article: Q175953
Product(s): Microsoft Exchange
Version(s): WinNT:4.0,5.0, 5.5
Operating System(s): 
Keyword(s): 
Last Modified: 13-MAR-1999

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The information in this article applies to:

- Microsoft Exchange Server, versions 4.0, 5.0, 5.5 
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SYMPTOMS
========

The Microsoft Exchange Server version 5.0 and 5.5 Administrator programs have
the ability to disable the generation of proxy addresses for certain address
types. This is done on the Site Addressing page of the Site Addressing object
under the Configuration object.

This functionality only works on Microsoft Exchange Server, version 5.0 or
above.

Therefore, if an Exchange Server site contains both version 4.0 and 5.0 or above
servers, mailboxes that were created on the version 5.0 or above server, will
not have the proxy addresses automatically created because the option was
disabled. However, if a mailbox is created on a version 4.0 server, the mailbox
will have all the proxy addresses automatically created.

The same results occur, when mailboxes are modified using the Import/Export
functionality of the Administrator program. If the import is done on a version
5.0 or above server, the disabled proxy addresses are not added to the
mailboxes, however, if the import is done on a version 4.0 server, the disabled
proxy addresses will be added to the server.

CAUSE
=====

The problem occurs because the functionality to disable certain proxy addresses
from being generated was added in version 5.0.

The System Attendant service is responsible for generating proxy addresses. It
does so by calling the proxy generators registered with the Exchange Directory,
for the current hardware platform. To confirm which proxy generators are
registered, double-click "Configuration\Addressing\E-Mail Address Generators" in
the right pane of the Microsoft Exchange Administrator program.

In version 5.0 and above, the System Attendant service looks at the
"Disabled-Gateway-Proxy" attribute on the Site Addressing object and does not
call the proxy address generators corresponding to the address types listed in
the above attribute.

In version 4.0, the System Attendant does not use the "Disabled-Gateway- Proxy"
attribute, and calls each proxy address generator registered for the current
hardware platform. This results in the generation of proxy addresses for address
types that have been disabled.

WORKAROUND
==========

In a site with a mixture of version 4.0 and 5.0 or above servers, the easiest
way to generate mailboxes or custom recipients without proxy addresses of a
certain type, is to make all the additions or modifications are performed on a
version 5.0 or above server.

In version 4.0, the only way to prevent the generation of an address is to remove
the proxy address generator.

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Keywords          :  
Technology        : kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbZNotKeyword2
Version           : WinNT:4.0,5.0, 5.5
Issue type        : kbprb
Solution Type     : kbnofix

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