diff --git a/inspect-mail.php b/inspect-mail.php
index dee716f..3d846b3 100644
--- a/inspect-mail.php
+++ b/inspect-mail.php
@@ -13,7 +13,7 @@ echo '<br><form action="inspect-mail.php" method="post">
 	  	<input type="text" name="domain" value="' . $_POST['domain'] . '">
         <input type="submit" value="ReTest">
       </form>
-      <p>To get: NS, MX and SPF records for the domain, make sure you test a FQDN that has a valid A record. <br>domain.tld should work.<br></p>';
+      <p><em>Note: To get NS and MX records for the domain, make sure you test a FQDN that has a valid A record. domain.tld should work.<br>To get SPF record, test SMTP server\'s FQDN with a valid A record or it\'s IP address.</em><br></p>';
 
 //  Identify, set data and report info
 if ( filter_var( $_POST['domain'] , FILTER_VALIDATE_IP ) ) {