id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
22837,"WP Needs to Set ""Sender"" and ""Reply-To"" or DKIM/DMARC will not work using wp-mail (via PHPMailer)",kellogg9,,"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.
",defect (bug),new,normal,Future Release,Mail,3.4.2,normal,,needs-patch,DeanMarkTaylor