I have got the firewall rule permitted from our RHEL 5.x & RHEL 6.x servers to our SMTP relay server (it's running RHEL 5.8). In the past, I recall I have a server that I could just issue mutt command below & it will send email out via that relay server : mutt -s "Test mail" -a /tmp/file.tar.gz abcde@xxxxxxxxxxxxxx < /tmp/mailmessage.txt Now all my servers (at another site) can't send email out. Did I need to set something at this site's server or is there any way that I could specify the SMTP relay server in the mutt command? In Windows, blat & sendemail allows me to specify the SMTP relay server. TIA SH -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list