title: Allow to send mail from domain with SPF record
body: <p>I have question concerning SPF records.</p>
  
  <p>The website (eg www.example.com) of one of my clients has a contact form that sends mails to contact@example.com.</p>
  
  <p>We only provide the hosting of the website so we do not manage email accounts, DNS records, etc .. only webspace. So my clients manages the DNS settings, nameservers, mail servers, etc..</p>
  
  <p>The mails are sent using PHP but they are never received by contact@example.com
  When I change contact@example.com to an email address outside the domein eg contact@test.com, I do receive the contact email.</p>
  
  <p>My conclusion is that their mailserver blocks mails from our IP address because PHP sends mails to an email address that has the same domain but has another IP.</p>
  
  <p>Also, my client uses Google Apps for email so the MX records on their DNS server point to Google.</p>
  
  <p>How can I fix this issue? Does my client need to add an SPF record that accepts our IP address? If so, whats the correct SPF syntax for this?</p>