From 95ebf1d35b9ff3612f0dec07db3a1e90fb6197b3 Mon Sep 17 00:00:00 2001
From: Kieran Jacobsen <2404128+kjacobsen@users.noreply.github.com>
Date: Fri, 3 Aug 2018 00:57:41 +1000
Subject: [PATCH] Include PTR types in SPF Builder (#378)

* Include PTR types in SPF

* Simplify PTR and Exists logic

* Include PTR test case

* Include PTR test case

* Remove extra }
---
 pkg/spflib/parse.go      | 2 +-
 pkg/spflib/parse_test.go | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkg/spflib/parse.go b/pkg/spflib/parse.go
index 55a6290bb..2111c9e5a 100644
--- a/pkg/spflib/parse.go
+++ b/pkg/spflib/parse.go
@@ -82,7 +82,7 @@ func Parse(text string, dnsres Resolver) (*SPFRecord, error) {
 					return nil, errors.Errorf("In included spf: %s", err)
 				}
 			}
-		} else if strings.HasPrefix(part, "exists:") {
+		} else if strings.HasPrefix(part, "exists:") || strings.HasPrefix(part, "ptr:") {
 			p.IsLookup = true
 		} else {
 			return nil, errors.Errorf("Unsupported spf part %s", part)
diff --git a/pkg/spflib/parse_test.go b/pkg/spflib/parse_test.go
index 157bbdb9c..8bb02e850 100644
--- a/pkg/spflib/parse_test.go
+++ b/pkg/spflib/parse_test.go
@@ -21,6 +21,7 @@ func TestParse(t *testing.T) {
 		"include:sendgrid.net",
 		"include:spf.mtasv.net",
 		"exists:%{i}._spf.sparkpostmail.com",
+		"ptr:sparkpostmail.com",
 		"~all"}, " "), dnsres)
 	if err != nil {
 		t.Fatal(err)