> to check use the below command > > # netstat -an | grep smtp The -n option to netstat will make that grep useless, since it shows the numerical information. % netstat -atn | grep 25 tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN % netstat -at | grep smtp tcp 0 0 *:smtp *:* LISTEN -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
