echo "TEST" | mailx -r Fss-root@fss.co.in -s "TEST mailx`hostname`" santhoshkv@fss.co.in

# pwd
/var/spool/mqueue
#
# ls -ltr
total 32
-rw-------    1 root     system            5 Jan 29 15:37 dfv0TA7gK84194784
-rw-------    1 root     system          641 Jan 29 15:38 qfv0TA7gK84194784
-rw-------    1 root     system            5 Jan 29 15:48 dfv0TAIgrx6488294
-rw-------    1 root     system          673 Jan 29 15:48 qfv0TAIgrx6488294
#
# cat dfv0TAIgrx6488294
TEST
#
# cat
[1] + Stopped (SIGTSTP)        cat
# ca
# cat qfv0TA7gK84194784
V8
T1485684462
K1485684489
N1
P120058
I10/6/37331
Mreply: read error from fss-alerts.fss.india.
Fbs
$_root@localhost
${daemon_flags}c u
SFss-root@fss.co.in
AFss-root@fss.co.in
MDeferred: Connection reset by fss-alerts.fss.india.
rRFC822; santhoshkv@fss.co.in
RPFD:santhoshkv@fss.co.in
H?P?Return-Path: <▒g>
H??Received: (from root@localhost)
        by CHNPRD4 (AIX7.1/8.14.4/8.14.4) id v0TA7gK84194784
        for santhoshkv@fss.co.in; Sun, 29 Jan 2017 15:37:42 +0530
H?D?Date: Sun, 29 Jan 2017 15:37:42 +0530
H?F?From: Fss-root@fss.co.in
H?M?Message-Id: <201701291007.v0TA7gK84194784@CHNPRD4>
H??To: santhoshkv@fss.co.in
H??Subject: TEST mailxCHNPRD4
*******************************************************************

# pass to name server to make hostname canonical
#R$* $| $* < @ $* > $*          $: $2 < @ $[ $3 $] > $4
R$* $| $*                       $: $2