Re: PHP mail() function and TMDA

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Keith Roberts wrote:
> Are there any particular things to do to set up PHP5 under 
> FC6 Linux, to send mail with the built-in PHP mail() 
> function, while using TMDA? I have an outgoing TMDA log, but 
> nothing appears in the log when I load a page with the 
> following code. I do not receive the email either.
> ...
> if ( mail($to, $subject, $message, $headers) ) {
>    echo "mail sent OK!";
> }
> else {
>    echo "Problem sending mail - :(";
> }

There's nothing in the code to say which server to connect to for
outbound mail. I guess the internals of the mail() function does one of:

* Connect to local SMTP server
* Invoke local /usr/bin/sendmail
* Perform an MX lookup and send the mail directly to the target server
  (incidentally, web scripts etc. should *never* do this[1])

You'll need to find out how mail() operates, in order to determine how
to solve the problem.

[1] What happens if the destination server isn't there; the mail just
gets lost - always send to a local server so it can perform retries if
required.
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