You have just built a new mail server for your organization that previously was using a cloud-based service. Unfortunately, you are finding that external sites are timing out when attempting to send mail to your new SMTP server. What port should you enable in your firewall to allow your mail server to properly communicate?
You need to configure your firewall to allow mail traffic between your mail server and the Internet. Which of these ports would be the most appropriate to open in your firewall?
The OSI model is a useful reference, but how does it really work in the real world? In this video, we’ll investigate how the OSI model maps into an encrypted email conversation with Google Mail.