On Wed, Jul 16, 2014 at 10:00:37AM +0800, Sunhux G wrote: > Thanks Fred. > > Sendmail was listed by our audit as a non-secure > service. Must sendmail be started or is there any > other alternative to send email? there are other tools to do a similar job, but the only one I've used, personally, is sendmail. I think Postfix is another one that may be in Centos, though I have no experience with it. > > Think in Windows environment, blat & sendemail > doesn't require an equivalent service to work so > if there is some other ways of sending email, will > be great, say using telnet: > > (does anyone has a script that could read in the > content of a text file, ie line 1-3 below & then > perform the steps below) : > > # telnet SMTP_Relay_IP 25 > HELO > 501 Syntax: HELO hostname > HELO smtp.mypostfixdomain.com > 250 hostname.mypostfixdomain.com > MAIL FROM:<sender_id@external_domain.com.sg> > 250 2.1.0 Ok > HELO smtp.mypostfixdomain.com > 250 hostname.mypostfixdomain.com > MAIL FROM:<sender_id@external_domain.com.sg> > 250 2.1.0 Ok > RCPT TO:<recipient_id@xxxxxxxxxxxxxxxxxxx> > 250 2.1.5 Ok > > RCPT TO:<root@xxxxxxxxxxxxxxxxxxx> > 250 2.1.5 Ok > DATA > 354 End data with <CR><LF>.<CR><LF> > line 1 > line 2 > line 3 > *.* > 250 2.0.0 Ok: queued as BAF8A200034 > > > On Wed, Jul 16, 2014 at 12:58 AM, Fred Smith <fredex@xxxxxxxxxxxxxxxxxxxxxx> > wrote: > > > On Wed, Jul 16, 2014 at 12:35:19AM +0800, Sunhux G wrote: > > > 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. > > > > Assuming you've got sendmail installed, and are using the default > > sendmail.cf, > > become root, then: > > > > cd /etc/mail > > vi sendmail.cf > > > > search for a line beginning with "DS", with a comment above it reading: > > "Smart" relay host (may be null) > > and change the line that reads just "DS" to read "DSyoursmarthost.foo" > > or whatever the FQDN is of your smart relay host. there is NOT a space > > between the "DS" and the FQDN. > > > > you'll probably need to restart the sendmail service afterward. > > > > -- > > ---- Fred Smith -- fredex@xxxxxxxxxxxxxxxxxxxxxx > > ----------------------------- > > Show me your ways, O LORD, teach me your paths; > > Guide me in your truth and teach me, > > for you are God my Savior, > > And my hope is in you all day long. > > -------------------------- Psalm 25:4-5 (NIV) > > -------------------------------- > > > > -- > > redhat-list mailing list > > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > > https://www.redhat.com/mailman/listinfo/redhat-list > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list -- ---- Fred Smith -- fredex@xxxxxxxxxxxxxxxxxxxxxx ----------------------------- "For the word of God is living and active. Sharper than any double-edged sword, it penetrates even to dividing soul and spirit, joints and marrow; it judges the thoughts and attitudes of the heart." ---------------------------- Hebrews 4:12 (niv) ------------------------------ -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
