Couple of mail() questions.

[Anon]

The PHP manual states that mail() returns a boolean. Question is, what does a false value represent? If mail() returns false, does this mean that the message was undeliverable due to a non-existent e-mail address? Or could it be due to something else, e.g., their mail server is down? Is there another error code that is returned (by reference)?

Next question: how do you include an attachment with mail()? For example, I often use the following statement:

mail($to, $subject, $message, $mailheader);

Can I simply add a fifth parameter that specifies where or what the attachment is? Must this be text only, or can images also be attached?

Thanks in advance.

[geo115fr]

re 1.
I doubt that mail() can check that the recipient email adress exists. If you fear that the adress is invalid, go to http://www.php.net/manual/en/function.getmxrr.php
to learn how to check that the recipient's domain exists.

re 2.
as explained in the manual, you can't add an attachment like that. refer to
http://www.zend.com/zend/spotlight/sendmimeemailpart1.php for conceptual details
I recommend to use the "HTML Email Class" from www.phpguru.org that works fine for me!