diff --git a/app/models/spf.rb b/app/models/spf.rb
new file mode 100644
index 0000000..6a2e0cd
--- /dev/null
+++ b/app/models/spf.rb
@@ -0,0 +1,8 @@
+class SPF < Record
+  validates :content,
+            format: {
+              with: /\A".*"\Z/,
+              message: 'SPF records should be enclosed in quotes'
+            }
+
+end
diff --git a/test/factories/spf.rb b/test/factories/spf.rb
new file mode 100644
index 0000000..633c97e
--- /dev/null
+++ b/test/factories/spf.rb
@@ -0,0 +1,7 @@
+FactoryGirl.define do
+  factory :spf, class: 'SPF' do
+    domain
+    name ''
+    content '"v=spf1 a:mail.example.com -all"'
+  end
+end
diff --git a/test/models/spf_text.rb b/test/models/spf_text.rb
new file mode 100644
index 0000000..dffe12c
--- /dev/null
+++ b/test/models/spf_text.rb
@@ -0,0 +1,36 @@
+require 'test_helper'
+
+class SPFTest < ActiveSupport::TestCase
+
+  test 'saves' do
+    rec = build(:spf)
+    rec.valid?
+
+    assert_empty rec.errors
+    assert rec.save
+  end
+
+  [
+    '""',
+    '"The quick brown fox"'
+  ].each { |spf|
+    test "valid content #{spf}" do
+      rec = build(:spf, content: spf)
+      rec.valid?
+      assert_empty rec.errors[:content], "#{spf.inspect} should be valid!"
+    end
+  }
+
+  [
+    '',
+    '"',
+    'no quotes',
+  ].each { |spf|
+    test "invalid content #{spf}" do
+      rec = build(:spf, content: spf)
+      rec.valid?
+      assert_not_empty rec.errors[:content], "#{spf.inspect} should be invalid!"
+    end
+  }
+
+end