diff --git a/options_test.go b/options_test.go
index 8d8fdf8..3b2f19f 100644
--- a/options_test.go
+++ b/options_test.go
@@ -15,6 +15,7 @@ func testOptions() *Options {
 	o.CookieSecret = "foobar"
 	o.ClientID = "bazquux"
 	o.ClientSecret = "xyzzyplugh"
+	o.EmailDomains = []string{"*"}
 	return o
 }
 
@@ -27,6 +28,7 @@ func errorMsg(msgs []string) string {
 
 func TestNewOptions(t *testing.T) {
 	o := NewOptions()
+	o.EmailDomains = []string{"*"}
 	err := o.Validate()
 	assert.NotEqual(t, nil, err)
 
diff --git a/providers/github.go b/providers/github.go
index a76d755..c9b490f 100644
--- a/providers/github.go
+++ b/providers/github.go
@@ -2,7 +2,6 @@ package providers
 
 import (
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io/ioutil"
 	"log"
@@ -211,5 +210,5 @@ func (p *GitHubProvider) GetEmailAddress(s *SessionState) (string, error) {
 		}
 	}
 
-	return "", errors.New("no email address found")
+	return "", nil
 }
diff --git a/providers/linkedin.go b/providers/linkedin.go
index 78ad3c9..2151229 100644
--- a/providers/linkedin.go
+++ b/providers/linkedin.go
@@ -3,7 +3,6 @@ package providers
 import (
 	"errors"
 	"fmt"
-	"log"
 	"net/http"
 	"net/url"
 
@@ -60,13 +59,11 @@ func (p *LinkedInProvider) GetEmailAddress(s *SessionState) (string, error) {
 
 	json, err := api.Request(req)
 	if err != nil {
-		log.Printf("failed making request %s", err)
 		return "", err
 	}
 
 	email, err := json.String()
 	if err != nil {
-		log.Printf("failed making request %s", err)
 		return "", err
 	}
 	return email, nil
diff --git a/validator.go b/validator.go
index 396e605..e3c0a54 100644
--- a/validator.go
+++ b/validator.go
@@ -71,9 +71,11 @@ func newValidatorImpl(domains []string, usersFile string,
 		domains[i] = fmt.Sprintf("@%s", strings.ToLower(domain))
 	}
 
-	validator := func(email string) bool {
+	validator := func(email string) (valid bool) {
+		if email == "" {
+			return
+		}
 		email = strings.ToLower(email)
-		valid := false
 		for _, domain := range domains {
 			valid = valid || strings.HasSuffix(email, domain)
 		}