emails sent to bulk folder....(Is this a php problem?)

I've got the following code:

Code:

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@mail($address, $title, $message , "From: ". $from . "\nContent-Type: text/plain; charset=utf-8");

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Which sends a verification email to a registered user. The only problem is the email is considered bulk, and ends up in the bulk folder, or doesn't show up at all. I'm thinking this is a php problem, because I've tried using many different email addresses to send from.

Does anyone have any idea what's going on?

Most ISP's do a reverse lookup on the IP address from which the email originates and, if it fails iut is considered spam.

Also, if you do have a host name associted with the server and the reverse lookup yeilds a different domain, it will also fail.

Not only that, but AOL will likely block--not move to bulk folder, but completely block--almost any email without 3 proofs of residence, a blood test and a small part of your left arm in order to prove it's really you sending the email, and not a bot (cuz god forbid a computer do anything these days). All of this can be sent to [email protected] but will probably be marked as spam and blocked completely =\

Also, if the smtp server your php is relying on has alot of emails going out at any given time, this could also cause a problem.
Make a new file called "phpinfo.php" and put this code in it:

Code:

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<? phpinfo(); ?>

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Browse to the page and Ctrl + F for SMTP, that will tell you the SMTP server you are using. You might need to get a sendmail script to use a different one, unless you are using your own server where you can change this yourself.