diff --git a/node/src/main/kotlin/com/r3corda/node/services/config/NodeConfiguration.kt b/node/src/main/kotlin/com/r3corda/node/services/config/NodeConfiguration.kt
index 12637337e4..c7c64ade8d 100644
--- a/node/src/main/kotlin/com/r3corda/node/services/config/NodeConfiguration.kt
+++ b/node/src/main/kotlin/com/r3corda/node/services/config/NodeConfiguration.kt
@@ -31,9 +31,12 @@ interface NodeSSLConfiguration {
 
 interface NodeConfiguration : NodeSSLConfiguration {
     val myLegalName: String
-    val exportJMXto: String
     val nearestCity: String
+    val emailAddress: String
+    val exportJMXto: String
     val dataSourceProperties: Properties get() = Properties()
+    val devMode: Boolean
+    val certificateSigningService: HostAndPort
 
     companion object {
         val log = LoggerFactory.getLogger("NodeConfiguration")
@@ -74,6 +77,19 @@ operator fun <T> Config.getValue(receiver: Any, metadata: KProperty<*>): T {
     }
 }
 
+/**
+ * Helper class for optional configurations
+ */
+class OptionalConfig<out T>(val conf: Config, val lambda: () -> T) {
+    operator fun getValue(receiver: Any, metadata: KProperty<*>): T {
+        return if (conf.hasPath(metadata.name)) conf.getValue(receiver, metadata) else lambda()
+    }
+}
+
+fun <T> Config.getOrElse(lambda: () -> T): OptionalConfig<T> {
+    return OptionalConfig(this, lambda)
+}
+
 fun Config.getProperties(path: String): Properties {
     val obj = this.getObject(path)
     val props = Properties()
@@ -85,21 +101,27 @@ fun Config.getProperties(path: String): Properties {
 
 class NodeConfigurationFromConfig(val config: Config = ConfigFactory.load()) : NodeConfiguration {
     override val myLegalName: String by config
-    override val exportJMXto: String by config
     override val nearestCity: String by config
+    override val emailAddress: String by config
+    override val exportJMXto: String by config
     override val keyStorePassword: String by config
     override val trustStorePassword: String by config
     override val dataSourceProperties: Properties by config
+    override val devMode: Boolean by config.getOrElse { false }
+    override val certificateSigningService: HostAndPort by config
 }
 
 class FullNodeConfiguration(conf: Config) : NodeConfiguration {
     val basedir: Path by conf
     override val myLegalName: String by conf
     override val nearestCity: String by conf
+    override val emailAddress: String by conf
     override val exportJMXto: String = "http"
     override val keyStorePassword: String by conf
     override val trustStorePassword: String by conf
     override val dataSourceProperties: Properties by conf
+    override val devMode: Boolean by conf.getOrElse { false }
+    override val certificateSigningService: HostAndPort by conf
     val useHTTPS: Boolean by conf
     val artemisAddress: HostAndPort by conf
     val webAddress: HostAndPort by conf
diff --git a/node/src/main/resources/reference.conf b/node/src/main/resources/reference.conf
index 308e102e77..cbff35ecdb 100644
--- a/node/src/main/resources/reference.conf
+++ b/node/src/main/resources/reference.conf
@@ -1,6 +1,7 @@
 myLegalName = "Vast Global MegaCorp, Ltd"
-exportJMXto = "http"
 nearestCity = "The Moon"
+emailAddress = "admin@company.com"
+exportJMXto = "http"
 keyStorePassword = "cordacadevpass"
 trustStorePassword = "trustpass"
 dataSourceProperties = {
@@ -9,4 +10,6 @@ dataSourceProperties = {
     "dataSource.user" = sa
     "dataSource.password" = ""
 }
+devMode = true
+certificateSigningService = "localhost:0"
 useHTTPS = false
\ No newline at end of file
diff --git a/node/src/test/kotlin/com/r3corda/node/services/ArtemisMessagingTests.kt b/node/src/test/kotlin/com/r3corda/node/services/ArtemisMessagingTests.kt
index c6fbbc3b50..2af75215ec 100644
--- a/node/src/test/kotlin/com/r3corda/node/services/ArtemisMessagingTests.kt
+++ b/node/src/test/kotlin/com/r3corda/node/services/ArtemisMessagingTests.kt
@@ -28,12 +28,19 @@ class ArtemisMessagingTests {
     val hostAndPort = freeLocalHostAndPort()
     val topic = "platform.self"
     val identity = generateKeyPair()
+
+    // TODO: create a base class that provides a default implementation
     val config = object : NodeConfiguration {
+
         override val myLegalName: String = "me"
-        override val exportJMXto: String = ""
         override val nearestCity: String = "London"
+        override val emailAddress: String = ""
+        override val devMode: Boolean = true
+        override val exportJMXto: String = ""
         override val keyStorePassword: String = "testpass"
         override val trustStorePassword: String = "trustpass"
+        override val certificateSigningService: HostAndPort = HostAndPort.fromParts("localhost", 0)
+
     }
 
     var messagingClient: NodeMessagingClient? = null
diff --git a/src/main/kotlin/com/r3corda/demos/RateFixDemo.kt b/src/main/kotlin/com/r3corda/demos/RateFixDemo.kt
index 51bce09907..d9c153be26 100644
--- a/src/main/kotlin/com/r3corda/demos/RateFixDemo.kt
+++ b/src/main/kotlin/com/r3corda/demos/RateFixDemo.kt
@@ -58,13 +58,20 @@ fun main(args: Array<String>) {
     // Bring up node.
     val advertisedServices: Set<ServiceType> = emptySet()
     val myNetAddr = HostAndPort.fromString(options.valueOf(networkAddressArg))
+
+    // TODO: create a base class that provides a default implementation
     val config = object : NodeConfiguration {
+
         override val myLegalName: String = "Rate fix demo node"
-        override val exportJMXto: String = "http"
         override val nearestCity: String = "Atlantis"
+        override val emailAddress: String = ""
+        override val devMode: Boolean = true
+        override val exportJMXto: String = "http"
         override val keyStorePassword: String = "cordacadevpass"
         override val trustStorePassword: String = "trustpass"
         override val dataSourceProperties: Properties = makeTestDataSourceProperties()
+        override val certificateSigningService: HostAndPort = HostAndPort.fromParts("localhost", 0)
+
     }
 
     val apiAddr = HostAndPort.fromParts(myNetAddr.hostText, myNetAddr.port + 1)
diff --git a/src/main/kotlin/com/r3corda/simulation/Simulation.kt b/src/main/kotlin/com/r3corda/simulation/Simulation.kt
index c88ba935f6..2e8fa0f9fd 100644
--- a/src/main/kotlin/com/r3corda/simulation/Simulation.kt
+++ b/src/main/kotlin/com/r3corda/simulation/Simulation.kt
@@ -1,10 +1,10 @@
 package com.r3corda.simulation
 
+import com.google.common.net.HostAndPort
 import com.google.common.util.concurrent.Futures
 import com.google.common.util.concurrent.ListenableFuture
 import com.r3corda.core.messaging.SingleMessageRecipient
 import com.r3corda.core.node.CityDatabase
-import com.r3corda.core.node.NodeInfo
 import com.r3corda.core.node.PhysicalLocation
 import com.r3corda.core.node.services.ServiceType
 import com.r3corda.core.protocols.ProtocolLogic
@@ -14,7 +14,6 @@ import com.r3corda.demos.api.NodeInterestRates
 import com.r3corda.node.services.config.NodeConfiguration
 import com.r3corda.node.services.network.NetworkMapService
 import com.r3corda.node.services.transactions.SimpleNotaryService
-import com.r3corda.node.utilities.AddOrRemove
 import com.r3corda.testing.node.InMemoryMessagingNetwork
 import com.r3corda.testing.node.MockNetwork
 import com.r3corda.testing.node.TestClock
@@ -58,13 +57,19 @@ abstract class Simulation(val networkSendManuallyPumped: Boolean,
                             advertisedServices: Set<ServiceType>, id: Int, keyPair: KeyPair?): MockNetwork.MockNode {
             val letter = 'A' + counter
             val city = bankLocations[counter++ % bankLocations.size]
-            val cfg = object : com.r3corda.node.services.config.NodeConfiguration {
+
+            // TODO: create a base class that provides a default implementation
+            val cfg = object : NodeConfiguration {
+
                 // TODO: Set this back to "Bank of $city" after video day.
                 override val myLegalName: String = "Bank $letter"
-                override val exportJMXto: String = ""
                 override val nearestCity: String = city
+                override val emailAddress: String = ""
+                override val devMode: Boolean = true
+                override val exportJMXto: String = ""
                 override val keyStorePassword: String = "dummy"
                 override val trustStorePassword: String = "trustpass"
+                override val certificateSigningService: HostAndPort = HostAndPort.fromParts("localhost", 0)
             }
             return SimulatedNode(dir, cfg, network, networkMapAddr, advertisedServices, id, keyPair)
         }
@@ -76,15 +81,20 @@ abstract class Simulation(val networkSendManuallyPumped: Boolean,
     val bankFactory = BankFactory()
 
     object NetworkMapNodeFactory : MockNetwork.Factory {
-        override fun create(dir: Path, config: com.r3corda.node.services.config.NodeConfiguration, network: MockNetwork,
+        override fun create(dir: Path, config: NodeConfiguration, network: MockNetwork,
                             networkMapAddr: SingleMessageRecipient?, advertisedServices: Set<ServiceType>, id: Int, keyPair: KeyPair?): MockNetwork.MockNode {
-            require(advertisedServices.contains(com.r3corda.node.services.network.NetworkMapService.Type))
-            val cfg = object : com.r3corda.node.services.config.NodeConfiguration {
+            require(advertisedServices.contains(NetworkMapService.Type))
+
+            // TODO: create a base class that provides a default implementation
+            val cfg = object : NodeConfiguration {
                 override val myLegalName: String = "Network coordination center"
-                override val exportJMXto: String = ""
                 override val nearestCity: String = "Amsterdam"
+                override val emailAddress: String = ""
+                override val devMode: Boolean = true
+                override val exportJMXto: String = ""
                 override val keyStorePassword: String = "dummy"
                 override val trustStorePassword: String = "trustpass"
+                override val certificateSigningService: HostAndPort = HostAndPort.fromParts("localhost", 0)
             }
 
             return object : SimulatedNode(dir, cfg, network, networkMapAddr, advertisedServices, id, keyPair) {}
@@ -92,30 +102,40 @@ abstract class Simulation(val networkSendManuallyPumped: Boolean,
     }
 
     object NotaryNodeFactory : MockNetwork.Factory {
-        override fun create(dir: Path, config: com.r3corda.node.services.config.NodeConfiguration, network: MockNetwork, networkMapAddr: SingleMessageRecipient?,
+        override fun create(dir: Path, config: NodeConfiguration, network: MockNetwork, networkMapAddr: SingleMessageRecipient?,
                             advertisedServices: Set<ServiceType>, id: Int, keyPair: KeyPair?): MockNetwork.MockNode {
-            require(advertisedServices.contains(com.r3corda.node.services.transactions.SimpleNotaryService.Type))
-            val cfg = object : com.r3corda.node.services.config.NodeConfiguration {
+            require(advertisedServices.contains(SimpleNotaryService.Type))
+
+            // TODO: create a base class that provides a default implementation
+            val cfg = object : NodeConfiguration {
                 override val myLegalName: String = "Notary Service"
-                override val exportJMXto: String = ""
                 override val nearestCity: String = "Zurich"
+                override val emailAddress: String = ""
+                override val devMode: Boolean = true
+                override val exportJMXto: String = ""
                 override val keyStorePassword: String = "dummy"
                 override val trustStorePassword: String = "trustpass"
+                override val certificateSigningService: HostAndPort = HostAndPort.fromParts("localhost", 0)
             }
             return SimulatedNode(dir, cfg, network, networkMapAddr, advertisedServices, id, keyPair)
         }
     }
 
     object RatesOracleFactory : MockNetwork.Factory {
-        override fun create(dir: Path, config: com.r3corda.node.services.config.NodeConfiguration, network: MockNetwork, networkMapAddr: SingleMessageRecipient?,
+        override fun create(dir: Path, config: NodeConfiguration, network: MockNetwork, networkMapAddr: SingleMessageRecipient?,
                             advertisedServices: Set<ServiceType>, id: Int, keyPair: KeyPair?): MockNetwork.MockNode {
             require(advertisedServices.contains(NodeInterestRates.Type))
-            val cfg = object : com.r3corda.node.services.config.NodeConfiguration {
+
+            // TODO: create a base class that provides a default implementation
+            val cfg = object : NodeConfiguration {
                 override val myLegalName: String = "Rates Service Provider"
-                override val exportJMXto: String = ""
                 override val nearestCity: String = "Madrid"
+                override val emailAddress: String = ""
+                override val devMode: Boolean = true
+                override val exportJMXto: String = ""
                 override val keyStorePassword: String = "dummy"
                 override val trustStorePassword: String = "trustpass"
+                override val certificateSigningService: HostAndPort = HostAndPort.fromParts("localhost", 0)
             }
 
             return object : SimulatedNode(dir, cfg, network, networkMapAddr, advertisedServices, id, keyPair) {
@@ -129,14 +149,19 @@ abstract class Simulation(val networkSendManuallyPumped: Boolean,
     }
 
     object RegulatorFactory : MockNetwork.Factory {
-        override fun create(dir: Path, config: com.r3corda.node.services.config.NodeConfiguration, network: MockNetwork, networkMapAddr: SingleMessageRecipient?,
+        override fun create(dir: Path, config: NodeConfiguration, network: MockNetwork, networkMapAddr: SingleMessageRecipient?,
                             advertisedServices: Set<ServiceType>, id: Int, keyPair: KeyPair?): MockNetwork.MockNode {
-            val cfg = object : com.r3corda.node.services.config.NodeConfiguration {
+
+            // TODO: create a base class that provides a default implementation
+            val cfg = object : NodeConfiguration {
                 override val myLegalName: String = "Regulator A"
-                override val exportJMXto: String = ""
                 override val nearestCity: String = "Paris"
+                override val emailAddress: String = ""
+                override val devMode: Boolean = true
+                override val exportJMXto: String = ""
                 override val keyStorePassword: String = "dummy"
                 override val trustStorePassword: String = "trustpass"
+                override val certificateSigningService: HostAndPort = HostAndPort.fromParts("localhost", 0)
             }
 
             val n = object : SimulatedNode(dir, cfg, network, networkMapAddr, advertisedServices, id, keyPair) {
@@ -151,9 +176,9 @@ abstract class Simulation(val networkSendManuallyPumped: Boolean,
     val network = MockNetwork(networkSendManuallyPumped, runAsync)
     // This one must come first.
     val networkMap: SimulatedNode
-            = network.createNode(null, nodeFactory = NetworkMapNodeFactory, advertisedServices = com.r3corda.node.services.network.NetworkMapService.Type) as SimulatedNode
+            = network.createNode(null, nodeFactory = NetworkMapNodeFactory, advertisedServices = NetworkMapService.Type) as SimulatedNode
     val notary: SimulatedNode
-            = network.createNode(networkMap.info.address, nodeFactory = NotaryNodeFactory, advertisedServices = com.r3corda.node.services.transactions.SimpleNotaryService.Type) as SimulatedNode
+            = network.createNode(networkMap.info.address, nodeFactory = NotaryNodeFactory, advertisedServices = SimpleNotaryService.Type) as SimulatedNode
     val regulators: List<SimulatedNode> = listOf(network.createNode(networkMap.info.address, start = false, nodeFactory = RegulatorFactory) as SimulatedNode)
     val ratesOracle: SimulatedNode
             = network.createNode(networkMap.info.address, start = false, nodeFactory = RatesOracleFactory, advertisedServices = NodeInterestRates.Type) as SimulatedNode
diff --git a/test-utils/src/main/kotlin/com/r3corda/testing/node/MockNode.kt b/test-utils/src/main/kotlin/com/r3corda/testing/node/MockNode.kt
index f297498cd6..044a849655 100644
--- a/test-utils/src/main/kotlin/com/r3corda/testing/node/MockNode.kt
+++ b/test-utils/src/main/kotlin/com/r3corda/testing/node/MockNode.kt
@@ -1,6 +1,7 @@
 package com.r3corda.testing.node
 
 import com.google.common.jimfs.Jimfs
+import com.google.common.net.HostAndPort
 import com.google.common.util.concurrent.Futures
 import com.google.common.util.concurrent.ListenableFuture
 import com.google.common.util.concurrent.SettableFuture
@@ -168,13 +169,19 @@ class MockNetwork(private val networkSendManuallyPumped: Boolean = false,
         val path = filesystem.getPath("/nodes/$id")
         if (newNode)
             Files.createDirectories(path.resolve("attachments"))
+
+        // TODO: create a base class that provides a default implementation
         val config = object : NodeConfiguration {
+
             override val myLegalName: String = legalName ?: "Mock Company $id"
-            override val exportJMXto: String = ""
             override val nearestCity: String = "Atlantis"
+            override val emailAddress: String = ""
+            override val devMode: Boolean = true
+            override val exportJMXto: String = ""
             override val keyStorePassword: String = "dummy"
             override val trustStorePassword: String = "trustpass"
             override val dataSourceProperties: Properties get() = if (databasePersistence) makeTestDataSourceProperties("node_$id") else Properties()
+            override val certificateSigningService: HostAndPort = HostAndPort.fromParts("localhost", 0)
         }
         val node = nodeFactory.create(path, config, this, networkMapAddress, advertisedServices.toSet(), id, keyPair)
         if (start) {