I am setting up an Email server and I can currently recieve Email from the outside world, but not send. My question is am I suppose to get TURN or ETRN Authenication from my ISP's email server in order to send email to the outside world?
I also would like to say that the website is hosted elsewhere rather than on my own server. To explain the setup a little bit, Email first gets sent to the website server and then redirected to my dyndns account, which then get redirected to my Email Server. I do not totally understand the MX record stuff, but will I need to have the ISP setup new MX records pointing to the hosted Website, or is calling them and telling them that there is a new Server on my Network that is needing Authentication? The website is hosted by 1und1.de, as well as email for the moment.
Thanks ahead of time for the help!!!