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Example scripts which do each of the 3 items you indicate, should be plentiful around the internet, and surely there are some examples right here on LQ, just a SEARCH away.. If you find some and edit them to suit your exact situation, or write your own, and it does not work as expected, please show us the scripts and paste verbatim any errors produced and/or describe the problem in detail, and we will try to help you fix the problems. Probably not many people are willing to write you your scripts, or do your searching for you.
I was created mail.sh and I wrote the following;
------------------------
telnet localhost 25
ehlo
mail from:a@host.com
rcpt to:b@client.com
data
backup success
.
quit
-------------------------
this is nice idea
but now problem is data integrity..! How do we do ?
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