[CentOS] Using postfix in CentOS 6 to relay mails to First.Last at gmail.com

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