Ubuntu/Scripts

Email current IP address

#!/bin/bash -x

#define varibles
#HOSTNAME=`hostname`
from="$HOSTNAME"'@sender domain.com'
to='recipient address'
recipient_mx='recipient mail exchanger'
DATE=`date`
messageid='[email protected]'
IP=$(curl checkip.dyndns.org|awk '/Address:/ {print$6}'|sed 's/<.*/ /')

#function containing mail commands.  Contains enough RFC required fields to satisfy gmail's requirements to allow the message, though it may be detected as spam if you do not have a SPF record.
function mail_input {
        sleep 1
        echo 'ehlo test.com\n'
        sleep 0.5
        printf 'mail from:<'"$from"'>\n'
        sleep 1
        printf 'rcpt to:<'"$to"'>\n'
        sleep 1
        printf 'data\n'
        sleep 0.5
        printf 'Return-Path: <'"$from"'>\n'
        printf 'Date: '"$DATE"'\n'
        printf 'Message-ID: <'"$messageid"'>\n'
        printf 'Subject: test\n'
        printf 'From: <'"$from"'>\n'
        printf 'To: <'"$to"'>\n'
        printf "$HOSTNAME"' ip address= '"$IP"'\n'
        printf '.\n'
        printf 'quit'
}

#sending mail with mail_input function
mail_input | telnet $recipient_mx 25 || exit
exit