Disable the X-Mailer header (#417)

da2x · Sam Tuke · commit 7e6a0469f094 · 2018-11-08T10:22:01.000Z
It’s adding no value and yields a negative spam score.
diff --git a/public_html/lists/admin/class.phplistmailer.php b/public_html/lists/admin/class.phplistmailer.php
@@ -12,6 +12,7 @@
 
 class PHPlistMailer extends PHPMailer
 {
+    public $XMailer = ' ';  // disables `X-Mailer' header
     public $WordWrap = 75;
     public $encoding = 'base64';
     public $messageid = 0;

Original file line number	Diff line number	Diff line change
`@@ -12,6 +12,7 @@`
`12`	`12`
`13`	`13`	`class PHPlistMailer extends PHPMailer`
`14`	`14`	`{`
	`15`	+ public $XMailer = ' '; // disables `X-Mailer' header
`15`	`16`	`public $WordWrap = 75;`
`16`	`17`	`public $encoding = 'base64';`
`17`	`18`	`public $messageid = 0;`