Basic mail function (PHP) additional "-f" parameter question

Question

Is the -f additional parameter correctly set in this mail function.

@mail("[email protected]",$title,$body,$headers,"-f");

I am Getting the X Warning from some servers.

Sorry for the basic question but some parts of the documentation got me confused (specially some user comments).

Thanks in advance!

Answer 1

From the manual:

The additional_parameters parameter can be used to pass additional flags as command line options to the program configured to be used when sending mail, as defined by the sendmail_path configuration setting. For example, this can be used to set the envelope sender address when using sendmail with the -f sendmail option.

The user that the webserver runs as should be added as a trusted user to the sendmail configuration to prevent a 'X-Warning' header from being added to the message when the envelope sender (-f) is set using this method. For sendmail users, this file is /etc/mail/trusted-users.

source: http://www.astahost.com/info.php/Sending-Mail-Php39s-Mail-Function_t2728.html

The additional_parameters parameter can be used to pass an additional parameter to the program configured to use when sending mail using the sendmail_path configuration setting. For example, this can be used to set the envelope sender address when using sendmail with the -f sendmail option. You may need to add the user that your web server runs as to your sendmail configuration to prevent a 'X-Warning' header from being added to the message when you set the envelope sender using this method. Example 3. Sending mail with extra headers and setting an additional command line parameter.

i.e:

<?php
mail("[email protected]", "the subject", $message,
"From: webmaster@{$_SERVER['SERVER_NAME']}", "-fwebmaster@{$_SERVER['SERVER_NAME']}");
?>

After -f you need to set the outgoing email address to prevent the warning (in this case its webmaster@-the domain-

Answer 2

If your machine runs on a linux server. Your apache install more than likely runs under the user 'www-data'.

you can figure this out easily by going to /etc/apache2 and typing

cat envvars | grep APACHE_RUN_USER

whatever is after '=' is what user apache is running as.

You need to add this user to the trusted-users file. This file is located at /etc/mail/trusted-users

just

nano /etc/mail/trusted-users

and write 'www-data'.

save and you should be good to go.