Spam Experts Help

PostFix iP Authentication

Routing all outgoing mails via the outgoing smarthost (IP Authentication):

  1. Ensure the IP address is added as an authorized smarthost (without authentication).
  2. Ensure the outgoing user has correct limits set matching your traffic volumes.
  3. Update your configuration
    1. Edit /etc/postfix/main.cf and ensure it contains the following line:
    2. relayhost = SMARTHOST:587

  4. Restart PostFix.