From: Alexander Farber <alexander.farber at gmail.com> > Is mayb postfix listening for local connections only > in the default CentOS 6 install? I see: > # netstat -an |grep -w 25 > tcp 0 0 127.0.0.1:25 0.0.0.0:* > LISTEN Section 15.3.1.2 of the RH documentation: https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/s1-email-mta.html JD