specify SMTP relay server in mutt

[Sunhux G]

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?

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 at external_domain.com.sg>
250 2.1.0 Ok
HELO smtp.mypostfixdomain.com
250 hostname.mypostfixdomain.com
MAIL FROM:<sender_id at external_domain.com.sg>
250 2.1.0 Ok
RCPT TO:<recipient_id at mypostfixdomain.com>
250 2.1.5 Ok

RCPT TO:<root at mypostfixdomain.com>
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 at fcshome.stoneham.ma.us>
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 at nixcraft.co.in <
> > /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 at fcshome.stoneham.ma.us
> -----------------------------
>                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)
> --------------------------------
>
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