title: SPF issue: what causes softfail?
body: <p>Whenever I use PHP to send emails to members of my site, the email ends up in the spam folder for most email providers like Gmail and Hotmail.</p>
  
  <p>When I check the original source in Gmail, I see the following:</p>
  
  <blockquote>
    <p>Delivered-To: mypersonalmail@gmail.com<br>
    Received: by 10.236.41.34 with SMTP id g22cs272510yhb;<br>
            Wed, 1 Jun 2011 05:38:27 -0700 (PDT)<br>
    Received: by 10.236.77.102 with SMTP id c66mr7228248yhe.303.1306931907131; 
            Wed, 01 Jun 2011 05:38:27 -0700 (PDT)<br>
    Received-SPF: softfail (google.com: best guess record for domain of transitioning info@mywebserver.com does not designate  as permitted sender)<br>
    Received: by 10.190.5.195 with POP3 id 3mf1156376yxt.72;
            Wed, 01 Jun 2011 05:38:27 -0700 (PDT)
    X-Gmail-Fetch-Info: info@mywebserver.com 14 mail.mywebserver.com 110 info@mywebserver.com<br>
    Return-path: <br>
    Envelope-to: info@mywebserver.com<br>
    Received: from mybestsh by s01.next-web.nl with local (Exim 4.69)<br>
        (envelope-from )<br>
        id 1QRkgT-0000BF-3v<br>
        for info@mywebserver.com; Wed, 01 Jun 2011 14:38:01 +0200<br>
    To: info@mywebserver.com<br>
    Subject: Your new password<br>
    MIME-Version: 1.0<br>
    From: MyServer <br>
    Reply-To: MyServer <br>
    X-Sender: MyServer   </p>
  </blockquote>
  
  <p>I have set up my SPF records as follows:</p>
  
  <pre><code>v=spf1 a mx ip4:xxx.xxx.xx.xx-all
  </code></pre>
  
  <p>I am wondering what causes the softfail. Any ideas?</p>