Problem with mail() function

[KABOOM]

I'm using a ISP to host my PHP based website and one of my users told me the webform I built doesn't work anymore. So, I investigated and it looked fine - so I built a simpler script as follows:

<?PHP

$flag = mail("[e-mail]", "TESTING", "DELETE ME");

if($flag)
print "Mail was sent";
else
print "Mail failed<BR>";

phpinfo();
?>

Now, the script says it works, my ISP says they didn't change anything and it looks like they are still using sendmail as their mail server (from the phpinfo()). I'm completely stumped on this because it worked before - no reason to believe it won't continue to work.

Can someone help me out?

[McIheal]

There is surely no error in your code. Ask your ISP to configure the server-environment properly....

[steadyguy]

I don't know if you knew this but if mail() returns TRUE, it doesn't mean that the user got the email, only that sendmail said, 'Ok, I'll try to deliver that.' In effect, this means that you can't really test to see if the message actually was sent.

In any case ... what happens if you take out the variable assignment and if test?

[KABOOM]

I tried removing the conditional statement and the variable assignment as suggested. No luck.

I've never really had to configure PHP, I just programmed in it. Is there anything in phpinfo() (or any other function) that might help me point my ISP in the right direction?

[KABOOM]

I also added all the extra header stuff (as suggested in the php manual) in my code and it didn't work either.