Increase allowed auth failure attempts, Increase maximum incremental backoff retry interval

server/config.go

@@ -49,7 +49,7 @@ const (
 	DefaultVisitorEmailLimitReplenish           = time.Hour
 	DefaultVisitorAccountCreationLimitBurst     = 3
 	DefaultVisitorAccountCreationLimitReplenish = 24 * time.Hour
-	DefaultVisitorAuthFailureLimitBurst         = 10
+	DefaultVisitorAuthFailureLimitBurst         = 30
 	DefaultVisitorAuthFailureLimitReplenish     = time.Minute
 	DefaultVisitorAttachmentTotalSizeLimit      = 100 * 1024 * 1024 // 100 MB
 	DefaultVisitorAttachmentDailyBandwidthLimit = 500 * 1024 * 1024 // 500 MB

server/server_test.go

@@ -796,6 +796,7 @@ func TestServer_Auth_Fail_CannotPublish(t *testing.T) {
 
 func TestServer_Auth_Fail_Rate_Limiting(t *testing.T) {
 	c := newTestConfigWithAuthFile(t)
+	c.VisitorAuthFailureLimitBurst = 10
 	s := newTestServer(t, c)
 
 	for i := 0; i < 10; i++ {