Sending mail from cgi

How do I send a mail from a (ANSI C) cgi program? I don't want the user to interfere. The mail should be entirely automatic. Maybe I have to do this through a JavaScript?
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obgAsked:
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fasterCommented:
A CGI right?  You need only download a perl script to do that.  "Formmail" or something else will do.


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obgAuthor Commented:
Sorry! I have to use ANSI C. If that can't be done, I have to use some JavaScript, or such.
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fasterCommented:
what platform?
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obgAuthor Commented:
I use a unix platform, but I would like the solution to be as portable as possible. I realize that I can use the system("mail") function, but who will be the sender? - Guess I'll have to try...
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mikal120797Commented:
Ok. This works on Linux, I assume it is standard. If this sample below doesn't work play with it -- it should work fine. Oh, and to use rmail you need to be running sendmail.

Call system("rmail recipient < filename_to_be_sent");

The first line of the file to be sent should read:
From user_who_sent_it

NOTE: No colon...
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kennethmCommented:
if you use "mail recipient < filename_to_be_sent", the sender will be the http daemon of your web server.

You can also use "mailx -r recipient -s subject < filename_to_be_sent"

"Sendmail" also performs simliar options.
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obgAuthor Commented:
I know the sender will be the http deamon, but I can change the sender, as mikal said, using From... I can still see, however, that the mail comes from the deamon. What is the difference in this aspect between rmail and mailx?
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