Postfix is exposing the local IP and machine name in emails sent from RHEL 5

Solution Verified - Updated -


  • Email sent from Postfix is exposing the local IP address, as well as the machine name, in the message header text.
  • This is a potential security risk.


  • Red Hat Enterprise Linux 5
  • Postfix 2.3 and below

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In