[wp-trac] [WordPress Trac] #22837: WP Needs to Set "Sender" and "Reply-To" or DKIM/DMARC will not work using wp-mail (via PHPMailer)

[WordPress Trac]

#22837: WP Needs to Set "Sender" and "Reply-To" or DKIM/DMARC will not work using
wp-mail (via PHPMailer)
-----------------------------+--------------------------
 Reporter:  kellogg9         |       Type:  defect (bug)
   Status:  new              |   Priority:  normal
Milestone:  Awaiting Review  |  Component:  Mail
  Version:  3.4.2            |   Severity:  critical
 Keywords:                   |
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 I notice that for DKIM to function (while using DMARC) correctly for
 outgoing mail the PHPMailer object needs to make sure the Sender and
 Reply-To fields match the "From" field otherwise the "Return-Path" header
 uses the server it is sending from causing a mismatch.  When this happens
 DKIM fails authentication on the receiver side because it is not added to
 outgoing mail.

 I tried adding the reply-to and sender header manually to wp_mail() but it
 did not work.  One had to do the following:

 Right now i have to manually modify the /wp-includes/pluggable.php file in
 the wp_mail() function to include:

         if (strlen($phpmailer->Sender)==0)
         {
                 $phpmailer->Sender = $phpmailer->From;
                 $phpmailer->AddReplyTo($phpmailer->From);
         }

 This resolves the problem and DKIM works again.

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Ticket URL: <http://core.trac.wordpress.org/ticket/22837>
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