Email Spoofing

Email Spoofing also called Email Forgery
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First select a domain and make sure it has email service and low security
then goto
Start>Run>cmd in windows
KDE>Run Command>xterm in linux

then on the terminal that appears type the following

ping -c 4

then something like the picture below will appear

Now we connect to the computer using telnet
in the terminal type
telnet <THE IP ADRESS> 25

and when it says connected type

mail from <anything@anydomain.any>

if there is no errror type

rcpt to <anyone@anydomain.com>

then type

data

look below for example

you may get an error like below if it appears the sites security is high enough to block you