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    CFMAIL can send mesage off our domain


    For some reason we can't send any emails off our our domain using CFMail.

    Any ideas on this?

    We have a Exchange 2003 mail server.
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    You're likely encountering the problem because CFMAIL is trying to use your exchange server as an "open relay." Most mail servers will only allow certain hosts to send e-mail - typically either those who have authenticated with a valid username or password, or those that are coming from a valid or "trusted" host. We run an in-house e-mail server and had to configure it to allow e-mails to be sent from our web server's IP address.

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