Sending email

Good day to all! 
I'm looking forward for your help in making my web
application work, i
have a simple web application that needs a feed back for
problem is i
dont know how to program when sending email, i tried to
google it and
got some answer but although i tried to supply all necessary
fields
like from, to, mail server (which is mail.example.com) i
cant send an
email.
i tried some of my friends mailserver it work once when i
supply the
ff values like
From: onefriends.com
To: mefriends.com
mailserver: mail.friends.com

I noticed when i tried to changed the values of to and from
it never
send ana email but returned me a cdo error, i find this odd
since it
should send to other email addresses like yahoo.com right?

my friend said that probably the mail server of example.com
is not yet
opened or probably needs a password, but using a web based
email
account i can send an email using supermanexample.com to batmanyahoo.com

anything i missed?

Thanks in advance for all answer.



 
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