Setting up your own email server with hMailServer
Testing the configuration
Almost done now, the only thing left to do is test your email environment to make sure everything is configured correctly and ensure it is not an open relay. First stop is to plug your domain in at DNSReport.com which will give you a good overview of how well your email system is setup. If DNSReport finds any issues of concern it will notify you and offer advice on what needs to be fixed.
There are several tests available for free on the internet for testing your email server for open relay, and the ones I'd suggest using are the tests at abuse.net and aupads.org. Once you have passed these tests then you should be all clear to go ahead and start creating other account and finally sending and recieving email from your very own email server.