mail function not working....please help

[Interlife]

hello this is my first post here . I recently got a web space on lebhosting (4urweb). anyway i made the site and i used the mail function in a file called post.php3 i upload it to the public html folder in the webspace and did not work is there anything else i have to do to let php work ( i know the site support php because
I put the command phpinfo() and it worked and gave me a lot of info)
now the post.php3 is like that:

<?php
mail("[e-mail]","My sub" ,"hellllo","From: [e-mail]\r\n");
echo("sent=done");
?>

and when i try it like that:
www.mydomain.com/post.php3 in my browser
it says done but i dont receive a thing in my email
please help me it is crucial to me to have it
thanks

[Morital]

Yes you always will get done cose echo("sent=done"); is always true in this script. I`m note sure but i think that send mail is forbidden on most public servers..try to contact server admin and ask him for SMTP server, or you can use ini_set("SMTP", "mail.server.com"); to use another SMTP server...🙂 if that server allow your request

and try this:

<?php
if(mail("[e-mail]","My sub" ,"hellllo","From: [email][e-mail][/email]\r\n")) {
echo("sent=done");
}
else {
echo("sent=nope");
}
?> 

Dont u get any errors or warnings??