How SMTP server works? need an understanding

smtp

I am looking for understanding on how an SMTP server works.

For example, if I wish to run an SMTP server on Windows 2008 for only one explicit application, which is running on it's web server, application server, and DB server, do I need to register the domain so as to send emails from my domain, if I wish to send emails to some users from that SMTP server?

Best Answer

No you do not need to register. You can install an SMTP server and start sending emails right away from it. There are some things you should do to avoid being marked as spam though:

  1. Use a static external IP address. Some SBLs will block email coming from a known dynamic IP address
  2. Setup SPF DNS records
  3. Setup a reverse DNS entry for the IP address the server is sending mail from
Related Topic