mail() function does not work

mail() function

[chrislinzh]

I use mail() function to send an email. But it doesn't work.Is there any problem with the server or my code?
<?
if (mail("[e-mail]","This is the test mail","Here is the testing text")) { print("ok");}
else print "fail";
?>
the result is "fail".

Please help me out of this problem.

[edited by: coopster at 5:29 pm (utc) on Mar. 18, 2005]
[edit reason] generalized email [/edit]

[jatar_k]

Welcome to WebmasterWorld chrislinzh,

well it could be a long list of things, you get fail in the code so I am guessing the mail doesnt get sent.

what OS are you running this on?
do you actually have an smtp server on this machine?
is php properly configured to send mail?

[chrislinzh]

Yes,the mail didn't send.
The OS is UNIX,it is a web hosting server.SO I think it should have a SMTP server.