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Editorial Team
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Asked: 2026-05-18T23:23:35+00:00

I’m using the PHP Pear Mail_Mime library to send email. In my script, I

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I’m using the PHP Pear Mail_Mime library to send email. In my script, I set the “From:” header before sending the message. This all works fine on a server running Mac OS X, (which presumably uses sendmail as the mailer, although I’m not 100% sure.) When sending a test email, the “From:” field shows the correct sender.

However, if I run the same script on a Linux server with Exim4 as the mailer, the email is still sent but the “From:” header shows up as a default instead of the one I specified in the script.

I’ve tried setting the “-f [from email address]” option in the “additional parameters” for PHP’s mail function, but this seems to have no effect.

Can anyone tell me how I might get the from header to work properly with Exim?

Any advice is greatly appreciated.

Cheers,
Tom

EDIT: here’s the code in case anyone is interested in looking at it.


<?php

  include_once('Mail.php');
  include_once('Mail/mime.php');


  $subject = "mime mail test";
  $from = "wtf@domain.com";
  $to = "wtf@domain.com";
  $visitor_email = $from;

  $message = new Mail_mime();
  $message->setTXTBody("hallo there!");


  $body = $message->get();
  $extraheaders = array("From"=>$from, "Subject"=>$subject,"Reply-To"=>$visitor_email);
  $headers = $message->headers($extraheaders);

  $mail = Mail::factory("mail");
  $result = $mail->send($to, $headers, $body, "", "-f wtf@domain.com -r wtf@domain.com");

  print_r($result);

?>
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1 Answer

  1. Editorial Team

    You’re sending via the command line (vs. SMTP). Exim only allows trusted senders to use the -f option. Either:

    • Change it to use SMTP (which will allow you to use whatever sender you want provided you are allowed to send email at all (which usually means IP-based or authentication-based controls)
    • Send from a user that is trusted (like root or the exim user)

    • Add the user sending the mail to the trusted user list in the exim config, which would look something like this:

      trusted_users = root:apache:www:exim:60001

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