Replying to a message from: Synametrics Support

Try the following:

  • Run Xeams in "Firewall" mode. This means that if a message is received for a local (internal) domain, it will be forwarded to another SMTP server within your organization.
  • Go to Server Configuration/SMTP Configuration, define the 10 internal domains you have, and specify the IP address of your downstream servers. For example, emails for internal01.com goes to 192.168.1.5, and internal02.com goes to 192.168.1.10, and so on.
  • If a user tries sending an email to a domain NOT specified in Xeams, the email will be rejected due to a "Relaying denied" error.