>I don't know what product you mean by "Mail Daemon". That is a generic term used for mail servers on *n?x systems. I didn't find any specific product with that name with a quick Google search. So, I don't have an answer for your specific question.
Mail Daemon, also known has MDaemon, is one of the most used email servers. It is the name of the product. The company is alt-n technologies.
http://www.altn.com/Products/MDaemon-Email-Server-Windows>However, there is at least one (potential) issue with what you're trying to do. By default, any spam filter that uses reverse DNS lookup will reject mails sent as @TheCompanyHere.com if reverse DNS shows they're actually coming from @levelextreme.com. To prevent that, you will need to get the network admin @TheCompanyHere.com to add a DNS SPF record for their domain, that lists your mail server's IP as one of the IPs that may be sending mail from their domain.
My domain is white listed at the company I am sending those emails to. This is a unique situation and it is controlled.
