You might want to take a look at MailSite:
http://www.rockliffe.com/mailsite.htm
It has anti-relay controls built in to the base package and does not require
the purchase of an add-on.
>Has anyone successfully been able to stop spammers from
>hijacking your server. We have had a terrible time blocking this from
>happening. I would welcome any info that could help manage this
>problem.
>
>I understand the new NTMail will have some additional features
>to help. We have not tried JUCE based on the problems we have read. Any
>thoughts?
>
>
>Kelly Wright (<<mailto:kelly@buz.net>kelly@buz.net)
>
>BuzNet Communications
>
><<http://www.buz.net>http://www.buz.net