ssmtp

#
# /etc/ssmtp/ssmtp.conf -- a config file for sSMTP sendmail.
#
mailhub=jupiter.gridway.net:587
FromLineOverride=YES
hostname=xdroop.dhs.org
rewriteDomain=gridway.net
root=postmaster
useTLS=YES
useSTARTTLS=YES
#Configure sSMTP in Five Easy Steps
#
#(1) mailhub
#This is the computer responsible for handling your outgoing mail.
#It could be the SMTP server of your ISP, or a departmental mailhub.
#Use the fully-qualified domain name (foo.bar.baz) of the mailhub;
#if it uses an unusual SMTP port number, use the colon syntax
#  foo.bar.baz:2525
#Otherwise sSMTP will use the standard SMTP port number (25).
#(Note that sSMTP can support a user-dependent mailhub with the
#'reverse aliases' feature, for which see the man page.)
#
#(2) FromLineOverride
#This specifies how sSMTP handles the From: line of outgoing mail.
#If FromLineOverride=YES, sSMTP will leave the From: line alone if
#it already exists.  If FromLineOverride has any other value, or
#there is no From: line, sSMTP creates the From: line using your
#username (or the -f command-line option), and the value of the
#rewriteDomain option (step (4), below).
#    If you use a mail user agent (MUA; e.g. mutt, pine) I recommend
#using YES and having the MUA set the From: line.  (Exception: the
#'reverse aliases' feature can be used to set up a particular From:
#address for each user, in which case don't use FromLineOverride=YES.
#See the man page.)
#
#(3) hostname
#sSMTP uses the hostname of your computer to identify itself to the
#mailhub, and in the Received: headers of the outgoing mail.  This
#has relatively little effect on how the mail is handled.
#    Use the fully-qualified domain name (FQDN) of your computer
#(foo.bar.baz).  If it doesn't have a FQDN, use some name for your box.
#
#(4) rewriteDomain
#Please enter the mail name of your system.
#sSMTP uses this value to add a domain to unqualified e-mail addresses
#(addresses without an @-sign).
#    You probably want to use the domain from your own e-mail address.
#You probably want to set up your MUA to handle unqualified addresses
#itself, in which case sSMTP will never have to use this.
#
#(5) root
#Last and least: if sSMTP finds an unqualified e-mail address among
#the recipients, and it corresponds to a username on your local
#machine with a userid less than 1000, then the e-mail is sent to
#this value instead.  The idea is that mail sent to 'root' should
#probably go to 'postmaster' instead.
#    If you set up your MUA to do its own handling of unqualified
#addresses, this is irrelevant.  Use the default value of 'postmaster'
#or your own e-mail address if you're paranoid.