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Exchange 2003 multiple send connector base on sending domain

Hi Guys,

I'm in a position where I have to re-configure an exchange 2003 server that currently utilizes the default SMTP connector to send all outgoing email via DNS, to send email from a specific domain via a smart host.

That is, All emails from domain1.com should go via smarthost1 all other emails should go directly via DNS lookup.

I'm guessing what I need to do is create new SMTP Connectors and utilize the "address" tab and cost fields to direct mail but I'm not sure how to go about this.

Whats the easiest way?

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AkhaterSolutions Architect

SMTP connectors can only be based on destination domains not sender domains.

so unless you already know what users are in which domains you cannot do it.

If you do know then you can create multiple smtp connectors and set permissions on which group can use what connector


Love exchange, Thanks for the reply.

Ok, Since this is for testing purposes, I can work with that restriction.

What are the steps involved?

1) Create a security group?
Solutions Architect
this should help you do it, just pay attention to the registry key you need to change first



Thanks Akhater, this will do nicely.

After reading the docs, I'd classify this change as low risk to current users. Would you agree?

AkhaterSolutions Architect

there is no risk for the users as long as you make sure there is at least one smtp connector allowed for each group no one should be affected