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550 5.7.1 Client does not have permissions to send as this sender

On Exchange 2010 how do allow a machine to send mail without needing to authenticate. I trust the machine to send mail on the exchange. Right now I get:
550 5.7.1 Client does not have permissions to send as this sender

Error.
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Starquest321
Asked:
Starquest321
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2 Solutions
 
cpmcomputersCommented:
If it has a static ip just
Create a receive connector specifying it as a valid sender
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cpmcomputersCommented:
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davorinCommented:
You need to configure relaying on the server:
http://exchangeserverpro.com/how-to-configure-a-relay-connector-for-exchange-server-2010/

But even for relaying from internal network I try to use port 587 or 465 and authentication whenever possible. If not possible limit the connector to machine IP.
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